After 11 days of war, the United States and Israel appear to have achieved significant military gains against Iran. American officials say strikes have destroyed large parts of Iran's missile infrastructure, naval forces and military facilities, dramatically reducing the country's ability to launch attacks.
President Donald Trump has suggested the conflict may already be nearing its conclusion. In a phone interview Monday evening, he said the war was "very complete, pretty much," comments that briefly reassured financial markets and pushed oil prices lower.
But, messaging from the Pentagon just hours later pointed in a different direction.
Defense Secretary Pete Hegseth warned that Tuesday would bring the "most intense day" of American strikes since the war began, with "the most fighters, the most bombers" deployed against Iranian targets. Hegseth said the U.S. military was giving Trump "maximum options" for how to prosecute the conflict, stressing that the president ultimately decides how far the campaign goes.
"He gets to control the throttle," Hegseth said.
The contrast in messaging highlights the central uncertainty surrounding the war: What exactly would victory look like for Trump?
While U.S. and Israeli forces say they have crippled much of Iran's missile and naval capabilities, the fighting itself is spreading across the region. Iranian missile and drone strikes have hit Gulf states, Hezbollah militants are clashing with Israeli forces in Lebanon, and commercial shipping through the Strait of Hormuz, through which roughly one-fifth of the world's oil flows, has slowed amid rising security fears.
Compounding the uncertainty is Trump's own shifting messaging about the war's timeline and goals. On Monday he suggested the conflict might soon be wrapped up, telling reporters he was "very far ahead of schedule." When pressed on what comes next, he offered little detail, saying, "I have a plan for everything."
Hours later, however, the president struck a tougher tone, saying the United States could already call the operation "a tremendous success" but might also escalate further. "Or we could go further," he said. "And we're going to go further."
The administration's stated objectives have also been expansive. Trump has said the campaign aims to ensure Iran cannot develop weapons capable of threatening the United States, Israel or American allies "for a very long time." The U.S. is aiming to destroy Iran's missile capabilities, cripple its naval forces, prevent it from building nuclear weapons and weaken the network of proxy groups Tehran supports across the Middle East.
Taken together, those goals leave open several possible endgames -- from degrading Iran's military capacity to forcing negotiations or even triggering deeper political change inside the country.
The most sweeping outcome would be the collapse or transformation of Iran's ruling system. Israeli Prime Minister Benjamin Netanyahu has suggested the Iranian people could ultimately rise up against the Islamic Republic, arguing that the current conflict could weaken the regime enough to trigger internal change.
For some policymakers in Washington and Israel, replacing Iran's leadership would be the only way to permanently eliminate the country's nuclear ambitions and dismantle the regional network of militant groups it supports, including Hezbollah and other proxy forces. A new government in Tehran, particularly one more aligned with the West, could fundamentally reshape the geopolitical balance of the Middle East.
But regime change is also the most unpredictable path. Even heavy military strikes may weaken the regime without necessarily bringing it down, raising the possibility of a prolonged and unstable transition rather than a clear strategic victory.
A more limited definition of victory would focus on weakening Iran rather than transforming its political system. Under this scenario, the main objective would be to destroy Iran's nuclear infrastructure, cripple its missile arsenal and naval forces, and break the military links between Tehran and its network of regional proxy groups.
U.S. and Israeli strikes have already targeted missile launch sites, military bases and facilities believed to support Iran's nuclear program. The broader aim would be to degrade Iran's ability to threaten U.S. allies, attack shipping in the Persian Gulf or support militant groups.
If Iran's military capabilities and proxy networks are significantly weakened, Washington could declare victory while leaving the country's political leadership in place -- at least for the time being.
A third possible outcome is that the war ultimately pushes Iran back to the negotiating table. Rather than seeking regime change or total military defeat, Washington could use the pressure created by airstrikes and economic disruption to force Tehran into a new diplomatic agreement.
Trump has long argued that intense pressure -- military, economic, or both -- can compel Iran to accept tougher limits on its nuclear program, missile development and regional activities.
In this scenario, victory would come not from battlefield collapse but from diplomacy. If Iran agrees to stricter nuclear restrictions, reduces support for regional proxy groups or accepts new security arrangements in the Gulf, the White House could claim the campaign succeeded by forcing concessions that years of negotiations failed to achieve.
A fourth possibility is that the war produces no clear victory at all. Instead of weakening Iran's leadership, the conflict could harden it. Iranian leaders may use the war to rally nationalist support, portraying the United States and Israel as outside aggressors.
The installation of a new supreme leader, Mojtaba Khamenei, after the death of his father could reinforce that dynamic. Mojtaba is widely seen as more hard-line than Ayatollah Ali Khamenei, raising the possibility that the regime could emerge from the conflict even more confrontational toward the West.
Rather than triggering unrest, military strikes could strengthen the government's grip as the country rallies around its leadership. Backed by the Revolutionary Guard and powerful security forces, Iran's political system has survived decades of sanctions and pressure.
In that case, the U.S. could be trapped in a prolonged confrontation, with no decisive outcome.
In the end, how the war finishes may depend less on the battlefield than on how Trump chooses to define victory. The U.S. and Israel may have weakened Iran's military capabilities, but that does not automatically resolve the larger challenge posed by its leadership, nuclear ambitions and regional influence.
Trump's shifting messages reflect that uncertainty. The war could end soon with a declaration of success, lead to negotiations with a weakened Iran, or continue if Washington decides the gains so far are not enough. What seems more certain is that Trump will likely declare the campaign a victory in some form regardless of how it ultimately concludes.