House Democratic leaders said in a joint statement on Thursday that they plan to force a vote “as soon as Congress reconvenes next week” on a resolution blocking military action against Iran without congressional authorization.

The statement, signed by House Minority Leader Hakeem Jeffries (D-NY), Minority Whip Katherine Clark (D-MA) and Caucus Chair Pete Aguilar (D-CA), as well as Reps. Greg Meeks (D-NY), Jim Himes (D-CT), Adam Smith (D-WA) and Ro Khanna (D-CA), all of whom hold committee leadership roles, argues that military action against Iran without authorization would be unconstitutional. The statement also serves as an apparent repudiation of claims by some progressives that Democratic leaders were privately maneuvering to block a vote on the resolution, fearing a significant number of party defections.

“The Iranian regime is brutal and destabilizing, seen most recently in the killing of thousands of protestors,” the Democratic officials said. “However, undertaking a war of choice in the Middle East, without a full understanding of all the attendant risks to our servicemembers and to escalation, is reckless.”

“We maintain that any such action would be unconstitutional without consultation with and authorization from Congress,” they continued.

At least one Republican, other than the resolution’s cosponsor Rep. Thomas Massie (R-KY), appears likely to support the war powers resolution. Rep. Warren Davidson (R-OH), a Republican with isolationist foreign policy leanings, said he would vote in favor of the resolution unless he receives a classified briefing on the “mission”  in Iran next week that provides “new information.”

“War requires congressional authorization. There are actions short of war, but no case has been made,” Davidson said.

Three Democrats — Reps. Josh Gottheimer (D-NJ), Jared Moskowitz (D-FL) and Greg Landsman (D-OH) — have indicated they will oppose the resolution. Some other defections are likely.

One issue that could drive particular concern for pro-Israel Democrats is that the legislation does not include specific language allowing for continued intelligence-sharing and defensive operations and aid to protect Israel from Iranian attack, which is included in similar Senate legislation.

Senate Minority Leader Chuck Schumer (D-NY) said in a Senate floor speech on Thursday, two days after receiving a classified briefing from Cabinet officials — that the administration still has yet to lay out its goals and plans for Iran.

“The issues we discussed in our classified briefing were very serious and the American people deserve to hear it directly from the president and his administration,” Schumer said.

Schumer has signed on as a cosponsor of the Senate war powers legislation.

Senate Majority Leader John Thune (R-SD), who was also briefed, said Thursday that any action against Iran should be decisive enough to bring down the regime.

“In my view, if you’re going to do something there, you better well make it about getting new leadership and regime change,” Thune said.