Iran held annual military drills with Russia on Thursday as a second American aircraft carrier drew closer to the Middle East, with both the United States and Iran signalling they are prepared for war if talks on Tehran’s nuclear program fizzle out.

President Donald Trump said Thursday, February 19, 2026, he believes 10 to 15 days is “enough time” for Iran to reach a deal. But the talks have been deadlocked for years, and Iran has refused to discuss wider U.S. and Israeli demands that it scale back its missile program and sever ties to armed groups. Indirect talks held in recent weeks made little visible progress, and one or both sides could be buying time for final war preparations.

Iran’s theocracy is more vulnerable than ever following 12 days of Israeli and U.S. strikes on its nuclear sites and military in 2025, as well as mass protests in January that were violently suppressed.

In a letter to the U.N. Security Council on Thursday, Amir Saeid Iravani, the Iranian ambassador to the U.N., said that while Iran does not seek “tension or war and will not initiate a war,” any U.S. aggression will be responded to “decisively and proportionately.”

“In such circumstances, all bases, facilities, and assets of the hostile force in the region would constitute legitimate targets in the context of Iran’s defensive response,” Iravani said.

Earlier this week, Iran conducted a drill that involved live-fire in the Strait of Hormuz, the narrow opening of the Persian Gulf through which a fifth of the world’s traded oil passes.

Tensions are also rising inside Iran, as mourners hold ceremonies honouring slain protesters 40 days after their killing by security forces. Some gatherings have seen anti-government chants despite threats from authorities.

Trump again threatens Iran

The movements of additional American warships and aeroplanes, with the USS Gerald R. Ford aircraft carrier near the mouth of the Mediterranean Sea, don’t guarantee a U.S. strike on Iran, but they bolster Trump’s ability to carry out one should he choose to do so.

He has so far held off on striking Iran after setting red lines over the killing of peaceful protesters and mass executions, while reengaging in nuclear talks that were disrupted by the war in June.

Iran has agreed to draw up a written proposal to address U.S. concerns raised during this week’s indirect nuclear talks in Geneva, according to a senior U.S. official who was not authorised to comment publicly and spoke on the condition of anonymity.