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A similar measure is also expected to fail in the House, giving the president near carte blanche to proceed with the conflict.

Top military officials said the campaign will intensify -- and declined to say what victory might look like.

The administration made its case behind closed doors on Tuesday -- and Republicans liked what they heard.

Senior officials keep offering justifications for the conflict with Tehran that the president upends.

An unexpected Republican joined in holding Trump's embattled DHS chief to the fire.

The minority party hopes to link the administration's military operation with domestic issues.

Elbridge Colby's rejection of an open-ended conflict comes as the administration seeks to solidify its messaging on the U.S. operation in Iran.

He also said U.S. defense companies are "under emergency orders" to build weaponry.

Trump administration officials will brief lawmakers Tuesday ahead of high-stakes war powers votes this week.

The nation's top military officials made the case for why the U.S. needed to attack now.