US Senate backs Trump on Iran strikes, blocks Dem bid to limit war powers

"This is not a forever war, indeed not even close to it. This is going to end very quickly," Republican Senator Jim Risch of Idaho, chairman of the Senate Foreign Relations Committee, said in a speech against the resolution.

The measure had not been expected to succeed. Trump's fellow Republicans hold majorities in both the Senate and House of Representatives, and have blocked previous resolutions seeking to curb his war powers.

Backers of the resolution said they would not give up, and even some Republicans who voted to block it said they would press for public testimony from Trump aides about the administration's Iran strategy, especially if the conflict lasts for weeks, as Trump has predicted.