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Four sources familiar say a preliminary US Military investigation finds the US is likely to blame for that deadly strike on a school in Iran that killed 170 people, mostly children. NBC News' Courtney Kube has the story.

According to a preliminary investigation, the U.S. may have been using old intelligence during the targeting process of the strike on the Iranian elementary school. NBC News' Courtney Kube reports on President Trump's reaction and what we know about ...

The munition could have hit the school because old intelligence showed it to be a military target, according to four sources familiar with a U.S. military probe's preliminary findings.

The U.S. said Tuesday it had destroyed 16 Iranian mine-laying ships, amid fears Tehran could deploy hundreds of mines to effectively booby-trap the critical shipping lane.

Since the war began, U.S. crude oil prices are up more than 25%.

As Israeli strikes tain, the number of people registered as displaced in Lebanon rose by 100,000, between Monday and Tuesday, according to figures released by the government.

Members of the delegation, who were in Australia for a tournament when war broke out at home, were offered asylum in "emotional" meetings, a government official said.

As fighting spreads across the Middle East, some Americans are choosing to stay in Lebanon, despite an onslaught of Israeli strikes. NBC News' Daniele Hamamdjian speaks to one woman who insists she won't leave Beirut.

A massive fire broke out in Switzerland on a postal bus leaving several dead. The fire may have been deliberately set. Authorities have not commented on whether or not this might be linked to terrorism. NBC News' Sam Brock has the late details.

House Speaker Mike Johnson said it's not "America's responsibility" to nation-build in Iran. The comments come one day after President Donald Trump said the U.S. operation in Iran is "the beginning of building a new country."