President Donald Trump is weighing whether to join Israel's ongoing strikes against Iranian nuclear infrastructure, intensifying a conflict that has entered its sixth day and sharply raised fears of a broader regional war. Iran's Supreme Leader Ayatollah Ali Khamenei warned Wednesday that "any military incursion by the United States will undoubtedly result in irreparable damage," underscoring the rising stakes as U.S. intervention appears increasingly possible.

In a social media post Tuesday, Trump appeared to escalate pressure on Tehran, writing, "We know exactly where the so-called 'Supreme Leader' is hiding. He is an easy target, but is safe there - We are not going to take him out (kill!), at least not for now." In another post, the president demanded Iran's "UNCONDITIONAL SURRENDER!"

American military involvement would likely include the deployment of advanced munitions to destroy hardened sites, such as the underground Fordow nuclear facility, according to sources cited by CBS News. More than 30 U.S. military planes have been repositioned from domestic bases to Europe in recent days, flight tracking reviewed by BBC Verify showed, raising questions over U.S. intentions.

While Israel initiated the conflict with surprise airstrikes last week that killed senior Iranian commanders and damaged key nuclear sites, Trump has until now resisted calls to join the campaign. However, after a Situation Room meeting Tuesday with his national security team, Trump's rhetoric hardened, with one administration official confirming he later spoke by phone with Israeli Prime Minister Benjamin Netanyahu.

U.S. Defense Secretary Pete Hegseth announced the deployment of "additional capabilities" to the Middle East, though officials stopped short of confirming direct military engagement. Experts cited the moves as part of a strategy of "strategic ambiguity," intended to pressure Tehran without committing forces prematurely.

Israel's military has pressed its advantage, with over 50 jets conducting strikes overnight on missile manufacturing facilities and a centrifuge plant. The International Atomic Energy Agency reported no significant damage at Fordow, though Director General Rafael Mariano Grossi told Bloomberg TV that inspections continue.

The Iranian government said more than 200 people have been killed in the attacks. Israel reported 24 fatalities and over 800 injuries since hostilities began, numbers that have held steady for two days.

Khamenei responded directly to Trump's threats in remarks carried by Fars News, saying, "Wise people who know Iran, its people, and its history never speak to this nation in the language of threats, because Iranians are not those who surrender."

Pakistan's foreign minister, Ishaq Dar, said Monday that Iran is open to resuming talks if Israel halts its strikes. "Our intention was always to see successful negotiations between the United States and Iran," Dar told parliament.

Trump's increasingly aggressive posture has split opinion in Washington. Some of his advisors advocate restraint, while others argue that limited strikes could cripple Iran's nuclear ambitions and strengthen Israel's position. Trump himself, returning from the G7 summit in Canada, told reporters he was "not too much in the mood to negotiate with Iran."

In the past, Trump has distanced himself from foreign interventions, but analysts believe the pressure to act has intensified. Former Israeli ambassador to the U.S. Michael Oren told BBC Radio 4 that Trump "would feel he had little choice but to intervene" if Iran attacked U.S. personnel or assets.

Tulsi Gabbard, Director of National Intelligence, has previously suggested Iran was not actively developing a nuclear warhead. Trump appeared to reject her assessment Tuesday, saying, "I don't care what she said. I think they were very close to having one."