Iran's Revolutionary Guard warned Monday that it would “change the geography of the war” if the United States escalates the conflict. Meanwhile, the British military said an “unknown projectile” struck a tanker as it entered the Strait of Hormuz on Monday,

By Shadia Nasralla LONDON, Sept 21 (Reuters) - Oil prices slid towards the psychological threshold of $100 a barrel and to their lowest in 11 days on Monday as investors hoped for diplomatic progress on the Iran war due to this week's UN meeting,

Oil fell Monday, as traders keep watch for a recovery in shipments from Saudi Arabia, even as Mideast tensions continue to escalate.

The president reportedly told Fox News correspondent Trey Yingst he has “very big things” in mind for the war in “the not-so-distant future.”

U.S. President Donald Trump reportedly said he is thinking of "blowing up" all of Iran as he left Camp David early to return to the White House.

The State Department urged Americans to reconsider Middle East travel as Houthi attacks intensify and Iran keeps the Strait of Hormuz closed.

The U.S. invasion of Iraq in 2003 set the path for Tehran to dominate its neighbor and whetted its appetite to grow its influence across the Middle East.

The Iran war has cost the United States at least $45.1 billion, military officials said. The amount covers the conflict through early September.

France will summon Iran’s ambassador and take appropriate measures in response after Iranian authorities sealed a French language center affiliated with its embassy in Tehran, the Foreign Ministry said on Sunday.