U.S. confrontation with a sharp warning from President Xi Jinping, cautioning Washington against military escalation after Beijing reportedly supplied advanced missile and drone systems to Tehran. As U.

President Donald Trump said that Iran's nuclear program was "obliterated" last summer, but he now says the U.S. may have to bomb Iran again over Iran's nuclear ambitions.

As U.S. forces mass in the Middle East, Iran faces the threat of major strikes by the world’s most powerful military, potentially targeting its leaders, military, nuclear sites and critical infrastructure.

US Iran tensions live updates: Reports said that Trump's special envoy to the Middle East Steve Witkoff and his son-in-law Jared Kushner were not happy with what they heard from Iranian officials in their morning session at Geneva talks.

Tehran is expected to deliver a new proposal on nuclear enrichment in Geneva as the United States continues to amass military forces in the Middle East.

The United States hopes talks with Iran in Geneva will ⁠produce ⁠an agreement to prevent Tehran acquiring nuclear weapons, ⁠and President Donald Trump has amassed forces in the Middle East to increase pressure on the Islamic Republic to reach ​a deal.

The massive U.S. military buildup in the Middle East is still growing, with more assets on the way. The expansion comes as the U.S. and Iran held talks in Geneva on Thursday, brokered by Oman. CBS News' Charlie D'Agata and Imtiaz Tyab have the latest.

A regime insider in Tehran told the FT that Iran had recalibrated its military doctrine towards the US, shifting from largely symbolic retaliation to a strategy designed to impose tangible costs on American forces and assets if conflict erupts.