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Senate Minority Leader Chuck Schumer said he spoke to President Trump about the Iran drone attack during a briefing for congressional leaders at the White House today.

"Now I told the President that these conflicts have a way of escalating. The President may not intend to go to war here, but we're worried that he and the administration may bumble into a war," Schumer told reporters.

He continued: "We told the room that the Democratic position is that congressional approval must be required before funding any kind of conflict in Iran. One of the best ways to avoid bumbling into war, a war that nobody wants, is to have a robust, open debate and for Congress to have a real say. We learned that lesson in the run-up to Iraq."

House Speaker Nancy Pelosi, who also attended the meeting, said it is essential the US remain "engaged with our allies."

“In light of the targeting of an unmanned US drone by Iran, it is essential that we remain fully engaged with our allies, recognize that we are not dealing with a responsible adversary and do everything in our power to de-escalate," she said in a statement.