WASHINGTON — President Donald Trump approved a sweeping new round of Trump Iran strikes with U.S. officials warning in classified briefings that Iran could respond with missile, proxy and cyberattacks that might kill large numbers of Americans, Feb. 28, 2026.
Those same briefings framed the operation as a high-risk bet that could cripple Iran’s military leadership and long-range strike capacity, potentially reshaping the region’s balance of power if Tehran’s retaliation could be contained, officials familiar with the matter said.
In an operation described by U.S. officials as “high risk, high reward,” planners presented Trump with scenarios ranging from limited Iranian retaliation to cascading attacks on U.S. forces and partners across the Middle East, according to Reuters’ account of the pre-strike briefings. The concerns centered on Iran’s ability to surge ballistic missiles, activate allied militias and disrupt shipping — and on whether U.S. bases could absorb follow-on salvos without significant casualties.
Trump Iran strikes and the “high-risk, high-reward” briefing
Senior administration officials told the president that Iran’s playbook would likely combine speed and ambiguity: quick missile launches, deniable attacks by proxy forces and disruptive cyber operations intended to strain air defenses and overwhelm decision-making. U.S. military planners also warned that Iranian strikes could target Gulf nations that host American forces, forcing Washington to defend multiple sites simultaneously, officials said.
Publicly, the administration cast the Trump Iran strikes as a preemptive campaign against “imminent threats,” emphasizing strikes on missile and naval assets and senior leadership targets. Reuters reported that Iran’s Supreme Leader Ayatollah Ali Khamenei was killed in the joint U.S.-Israeli offensive, a development that immediately raised the risk of a broader conflict as Iran promised revenge and launched retaliatory attacks, according to Reuters’ reporting on the operation.
As the operation unfolded, U.S. officials monitored potential Iranian responses including attacks on U.S. installations, strikes on commercial shipping lanes and attempts to widen the battlefield through allied armed groups. Early reports varied on the scope of damage from Iran’s counterstrikes and on the longer-term prospects for de-escalation.
Risk of retaliation and “major U.S. casualties” scenarios
Officials said the most alarming projections in the briefings were not about a single strike but about the possibility of sustained, multi-day retaliation aimed at airfields, logistics hubs and command-and-control nodes — the kinds of targets that, if hit repeatedly, could drive casualty numbers sharply higher. In that assessment, even strong defenses might not prevent “major U.S. casualties” if Iran chose to spend missiles aggressively and coordinate attacks with proxies and cyber units.
Those warnings shaped contingency planning for force protection and reinforced pressure on regional partners to elevate alert levels. U.S. officials also weighed how quickly Iran could replenish or reposition launchers, and how effectively it could coordinate attacks across borders, officials said.
How the Trump Iran strikes fit a longer arc of escalation
The current Trump Iran strikes land in a U.S.-Iran confrontation that has repeatedly swung between threats, limited kinetic exchanges and punctuated diplomacy. The continuity matters, analysts say, because Tehran’s retaliation calculus often draws on lessons from prior clashes — including what it believes worked, what triggered U.S. restraint and what signaled Washington’s red lines.
In Trump’s first term, he withdrew the United States from the 2015 nuclear deal, a turning point that accelerated pressure campaigns and set the stage for later military brinkmanship, as Reuters reported in May 2018. A year later, Trump said he called off a retaliatory strike after Iran downed a U.S. drone, citing concerns that an attack could have killed 150 people, according to Reuters’ June 2019 coverage.
Then came the January 2020 U.S. strike that killed Iranian Gen. Qasem Soleimani, followed days later by Iran’s ballistic missile attack on Iraq’s Al Asad Air Base. A later U.S. report described how the barrage nearly killed scores of U.S. personnel and destroyed aircraft, Military.com reported in 2021. That episode is frequently cited inside the U.S. national security establishment as a template for how Iran can deliver direct, attributable retaliation while trying to calibrate escalation.
What changes now
Unlike many prior episodes, the latest Trump Iran strikes targeted leadership figures at the top of Iran’s system, a move likely to intensify internal pressures in Tehran and complicate any near-term off-ramp. Live coverage from multiple outlets tracked regional responses, including Iranian strikes and international calls for restraint, as CBS News reported in its running updates.
Separately, broader explainers highlighted how years of maximum-pressure policies, military incidents and stalled negotiations helped set conditions for the current conflict, as Time outlined in its background report. The question now, regional officials and analysts say, is whether Iran chooses a short, sharp retaliation — or a sustained campaign designed to make the Trump Iran strikes politically and militarily costly.
What comes next for U.S. forces and the region
In the near term, U.S. commanders are expected to prioritize air and missile defense, harden facilities, disperse assets and tighten operational security to reduce vulnerability to follow-on attacks. Diplomatically, Washington faces pressure at home and abroad over war powers and the scope of the campaign, while U.S. partners weigh how openly to support operations that could draw retaliation onto their territory.
For Iran, the response options range from direct missile launches to more deniable proxy attacks — choices that will signal whether Tehran is seeking revenge within limits or attempting to broaden the conflict. For the U.S., the core test of the Trump Iran strikes may be less about the first wave of targets than about whether the administration can deter — or absorb — the retaliation it was warned to expect.
