The simulated conflict ended without regime change in Pyongyang, allowing Kim Jong Un to claim a political victory. While avoiding nuclear escalation may seem prudent, such an outcome could deal a lasting blow to the credibility of America’s extended deterrence in East Asia.

The Guardian Tiger scenario should not be dismissed as an academic exercise. It reveals a critical vulnerability in the psychological foundation of deterrence: the perception among adversaries and allies of American willingness to use nuclear weapons in defense of its partners. If allies conclude that Washington will not cross the nuclear threshold even after a nuclear attack, they may question the value of the nuclear umbrella. Adversaries, meanwhile, may learn that nuclear coercion, carefully calibrated, can succeed.

In the simulation, North Korea escalated to a tactical nuclear strike against a South Korean Navy destroyer in the East Sea (Guardian Tiger I) and later against the Chinhae naval base (Guardian Tiger II), home to the Republic of Korea Navy’s Submarine Force Command and occasionally used for allied submarine visits. According to the report, American leaders debated nuclear retaliation but settled on conventional “pulsed” strikes.

In a real-world scenario, such strikes could plausibly involve precision-guided munitions from long-range bombers like the B1-B and Tomahawk cruise missiles launched from Arleigh Burke-class destroyers, aimed at targets such as missile transporter-erector launchers, hardened artillery positions along the DMZ, and command-and-control facilities near Pyongyang. In the exercise, the US stopped short of regime change, seeking to avoid further nuclear escalation and prevent a direct war with China—a decision that would have allowed Pyongyang to absorb the damage, count the survival of its regime as a strategic win, and enter negotiations from a stronger position.

Extended deterrence depends on more than military capability. It is rooted in the belief, shared by allies and adversaries alike, that the United States is willing to defend its partners by all means necessary, including nuclear weapons. An American failure to respond in kind to North Korean nuclear use would plant seeds of doubt. Japanese and South Korean leaders could begin to question whether Washington would truly “trade Los Angeles for Tokyo or Seoul” if the stakes involved limited nuclear use rather than an existential threat to the United States.

That doubt could trigger cascading effects. Calls in Seoul’s National Assembly for indigenous nuclear weapons, expanded production of the Hyunmoo‑4 ballistic missile, and pressure on Tokyo to more seriously pursue nuclear sharing arrangements have already entered the political debate.

This concern is amplified by North Korea’s 2022 nuclear weapons law, which openly authorizes preemptive nuclear strikes in scenarios ranging from an imminent attack on leadership to undefined overwhelming crisis situations. Analysts note that the law’s language effectively lowers the threshold for nuclear use, implying tactical employment to repel invasion and seize the initiative in war. Rather than viewing nuclear use as a desperate last resort, Pyongyang now appears willing to employ such weapons early. For example, a low‑yield detonation against South Korean or American forward-deployed forces to shock Washington and Seoul into political concessions.

The challenge grows sharper in the event of a dual contingency: simultaneous crises on the Korean Peninsula and in the Taiwan Strait. Guardian Tiger II simulated such a scenario, with China launching a multi-domain assault on Taiwan while North Korea escalated on the peninsula. In such a real-world situation, US Indo-Pacific Command could be forced to divert the USS Ronald Reagan Carrier Strike Group from Yokosuka to the waters east of Taiwan, deploy B‑52H bombers to deter Chinese operations, and even consider repositioning some Terminal High Altitude Area Defense and Patriot missile defense batteries from South Korea to protect American assets in Okinawa and Guam.

Such shifts illustrate how a stretched American posture could reduce missile interception capacity on the peninsula and temporarily remove some nuclear-capable platforms from immediate Korean defense. North Korea could calculate that Washington, already balancing a larger confrontation with China, would avoid nuclear escalation in Korea to conserve resources and limit the risk of an all-out US-China war.

The political and strategic consequences would ripple across the region. In Seoul, public and elite opinion could shift sharply toward developing an independent nuclear arsenal—something 71 percent of South Koreans already support. South Korea’s nuclear latency, widely assessed by proliferation experts, suggests it could potentially produce a weapon in as little as 6 months if political consensus formed.

In Tokyo, the debate over counterstrike capabilities, missile defense expansion, and potential nuclear sharing with the United States would intensify, potentially accelerating deployment of Tomahawk missiles and further integration of F‑35A fighters, which, in the US fleet, are being certified for B61‑12 nuclear bombs, into allied defense planning. Beijing, meanwhile, could seize the opportunity to position itself as a stabilizing broker, offering to mediate between Seoul and Pyongyang while shielding the latter from full international accountability, further eroding American influence.

Avoiding nuclear escalation in a limited-strike scenario is understandable, but Washington cannot afford such a decision to be interpreted as weakness. Strengthening deterrence credibility in Northeast Asia will require more than declaratory statements. Clear and credible red lines for nuclear use must be communicated both publicly and privately. Integrated nuclear-conventional planning with allies should ensure that flexible response options, from proportionate nuclear strikes to overwhelming conventional retaliation, are executable on short notice. Contingency planning must explicitly account for simultaneous conflicts in Korea and Taiwan, with pre-positioned munitions, dispersed basing arrangements for nuclear-capable aircraft, and rotational deployments of dual-capable ships and submarines to maintain strategic presence even under force diversion.

Equally important is sustained alliance signaling. These include high-visibility joint exercises like the US-ROK Freedom Shield exercises, regular port visits by nuclear-capable submarines, and trilateral missile tracking drills with Japan. These measures reassure allies, complicate adversary calculations, and demonstrate that any nuclear use will incur unacceptable costs.

The Guardian Tiger exercises are valuable not because they predict the future, but because they reveal how quickly deterrence can fray in the fog of crisis. A single decision to refrain from nuclear retaliation, however understandable at the time, could reverberate for decades and reshape the strategic balance in East Asia. In the nuclear age, preserving deterrence means guarding against both uncontrolled escalation and the perceptions of hesitation that could invite it.

Dr. Ju Hyung Kim, President of the Security Management Institute, a defense think tank affiliated with the South Korean National Assembly, is currently adapting his doctoral dissertation, “Japan’s Security Contribution to South Korea, 1950 to 2023,” into a book.

A Nuclear Umbrella in Peril: Lessons from North Korea’s Escalation Scenarios was originally published on Global Security Review.

Strategic Drivers

There are several strategic imperatives driving Israel’s likely military action against Iran. This includes the full neutralization of Iran’s regional military ecosystem. Israel’s continuous operations in Gaza and its persistent pressure on disarming Hezbollah in Lebanon are not isolated campaigns. They are shaping operations aimed at reducing the two-front (or three-front) threat Israel faces in a direct confrontation with Iran. By degrading proxy capacity now, Israel frees resources and attention for a larger, concentrated blow against Iranian assets without the burden of sustained high-intensity proxy retaliation.

Moreover, it might be viewed by Israel that the current timing is an opportunity to exploit internal Iranian fault lines where it can be obvious that Israeli intelligence may take advantage of the exploitable rifts in the Iranian leadership ecosystem. This includes the ongoing rifts between the Islamic Revolutionary Guard Corps (IRGC) and the regular Iranian army, as well as between the IRGC and the Supreme Leader’s advisory council. Altogether, these seams, if widened, could limit Iran’s unified response and complicate its chain of command in the early hours of an Israeli strike.

Aligning a strategic military timeline within a political context is also another factor that may trigger a more expansive attack on Iran. Prime Minister Netanyahu’s possible target date before October 7, 2025, is symbolically and politically loaded. Delivering a strategic blow before this anniversary serves multiple purposes, including but not limited to consolidating his domestic political standing, demonstrating Israel’s capacity to impose strategic costs on Iran, and shaping the broader narrative in the US.

Operational Indicators of Preparation

Mossad has already intensified intelligence and special operations inside Iran, including target acquisition and asset positioning. This was also very apparent in the drone attacks by Israel, that took place from within Iran, in the recent confrontation. They resulted in the successful elimination of many of Iran’s senior military members. These activities are not stand-alone intelligence-gathering missions; they are preparatory steps for synchronized special forces, air, and cyber composite operations. Accordingly, expanded Israeli intelligence and activity against Iran is highly likely with the operational aim to pre-emptively disable Iranian sensor grids, command nodes, and ballistic missile launch infrastructure.

Indications within the Israeli Defense Force (IDF) suggest a possible force regeneration, given the apparent contradiction between political calls for full Gaza occupation and the IDF chief of staff’s emphasis on giving forces a rest. This is consistent with a combat reconstitution phase. This also aligns with the doctrine of unit rotation, replenishment, and training for the demands of long-range precision strike and high-tempo air operations.

At this stage, signs of Iranian defensive mobilization are extremely important. Tehran’s formation of a National Defense Council under Ali Larijani and consolidation of 13 security agencies into three “super-agencies” is an unmistakable sign that Iran expects a broader confrontation. Such a restructuring’s purpose is to tighten internal security, improve rapid mobilization of conventional and unconventional forces, and streamline command and control. Ironically, such rapid reorganizations can create bureaucratic friction—an exploitable weakness during the chaos of an initial strike.

Political Leverage and Timing

US involvement and the “Trump factor” are critical for Israel. Netanyahu’s priority is securing at least limited US involvement or political cover. Persuading Trump to back a strike or provide overt/implicit support could blunt international pushback and potentially extend Israel’s operational window. Netanyahu’s engagement with the pro-Israel lobby in the US is also aiming to mitigate more isolationist resistance, which is anchored in Trump’s “end wars” philosophy.

Many currently view Israel’s great power triangulation as political leverage. For example, Israel is engaging in calculated quid-pro-quo diplomacy where it is coordinating with Russia in order to possibly avoid Russian obstruction in Syrian and regional airspace. In parallel, Israel is supporting Trump’s interests in Ukraine negotiations and the recently announced Azerbaijan-Armenia reconciliation in exchange for flexibility on Iran. This triangulation reduces the risk of multi-front geopolitical friction during the strike window.

The Anticipated Israeli Operational Concept

Consistent with IDF doctrine, a multi-domain composite strike operation is highly likely. Such a strike is likely to combine precision air/missile strikes and cyber-sabotage. Sequence effects would aim to blind Iranian radar, degrade command-and-control (C2) nodes, and neutralize ballistic missiles at launch sites within the first hours as well as exploit “left-of-launch” interception to deny Iran its most potent retaliatory capability. Additionally, ongoing operations in Gaza and along the Lebanese border serve as “maskirovka,” where a strategic deception fixes adversary focus away from the Iranian theater and provides live operational rehearsal for air-to-ground coordination, precision targeting, and strategic messaging.

However, Israel’s plan is expected to involve pre-emptive or concurrent action against Hezbollah in Lebanon, the Houthis in Yemen, and Iraqi Popular Mobilization Forces (PMF). This is very likely given the fact that Hezbollah vowed not to disarm and give armaments control to the Lebanese army. Accordingly, Iran’s proxy neutralization remains one of the most important steps ahead of a full-scale attack on Iran. This procedure is critical to prevent logistical and operational disruption to the main Iran-focused strike locations as well as protect regional Arab states indirectly supporting Israeli strikes on Iran from the latter’s proxies’ retaliatory actions.

International Pressure Tolerance and Timeline Assessment

Israel’s willingness to accept higher casualties and endure reputational costs has already been demonstrated in its Gaza and Lebanon campaigns, as well as the limited strikes it conducted against Iran. This signals a political readiness to withstand the diplomatic fallout of striking Iran, and a military posture aligned with completing decisive action before the strategic window closes.

Key risks exist with a full-scale attack on Iran. First, American political dynamics, where, for instance, isolationism and Trump’s Nobel Peace Prize ambitions could temper military participation or support. Second, the threat from Iran’s regional proxies still exists, where the risk of multi-proxy escalation is very likely. In this regard, full activation of Hezbollah, the Houthis, and the PMF would complicate Israel’s operational tempo. Third, there is the chance of an Iranian counter-surprise, where Tehran attempts its own pre-emptive measures (cyber, proxy action, or limited missile strikes). That said, Israel’s concept appears to be structured for first-mover advantage, assuming Iran’s reorganized security apparatus is slow to adapt in the initial strike window.

Forecast and Likely Outcomes

Given the current convergence of strategic necessity, operational readiness, and political opportunity, the probability of a renewed, larger-scale Israeli attack on Iran before year-end is very high. The planned operation will probably try to take advantage of divisions within Iran to create more chaos, reduce the chances of retaliation from its proxies, and cause major damage to Iran’s missile, nuclear, and command systems—all with an aim of shaping the regional balance in Israel’s Favor ahead of the October 7 anniversary.

If executed, such a strike would represent the most significant escalation between Israel and Iran to date as well as a defining test of Israeli air and missile defense capacity against retaliatory salvos, which then would reshape Middle East strategic alignment and potentially lock in a more aggressive Israeli doctrine of direct confrontation with regional adversaries, rather than proxy containment.

While forecasts will continue, the coming period may include several operational watch points. This includes anomalies in which sudden spikes in Israeli aerial reconnaissance occur over Iraq, Syria, or along Iran’s western approaches. Additionally, force posture shifts are a significant indication; noticeable redeployment or reinforcement of Israel’s Iron Dome, David’s Sling, and Arrow batteries are highly likely to be a main indicator of Israel’s reinforcement for defensive systems against any Iranian missile attack. Diplomatic traffic is also a key indicator, where intensified Israeli engagement in Washington, Moscow, and key Arab Gulf capitals may indicate Israel’s preparation for an expanded offensive on Iran.

Whatever may occur, vigilance is required. Without it, the implications are significant for nations and people across the region.

Mohamed ELDoh is a guest writer for Global Security Review.

Forecasting an Imminent Israeli Strike on Iran was originally published on Global Security Review.

In this episode, Adam, Curtis, and Jim tackle a bold and unsettling question:
After America’s successful strike on Iran’s nuclear facilities, is the U.S. truly prepared to defend its nuclear arsenal?

This conversation dives deep into the heart of nuclear strategy and deterrence:

• The critical role of airborne alert systems and the lessons of the Looking Glass mission.
• The tension between traditional deterrence systems and emerging technologies.
• Why visibility, command, and control remain the pillars of credible nuclear deterrence.
• How modernization of nuclear forces shapes the future of U.S. security.

In an age of rapid technological change, understanding deterrence isn’t just for policymakers—it’s vital for anyone who values global stability.

Listen now to uncover why the strength of deterrence rests not just on weapons, but on resilient systems and clear strategy.

#NuclearDeterrence #NationalSecurity #Modernization #CommandAndControl #StrategicStability #DefenseInnovation

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Is America Prepared for a Strike Against its Nuclear Command and Control? was originally published on Global Security Review.