If some key Democrats get their way, the Senate will have to vote on the limits of President Donald Trump’s ability to go to war with Iran.

The vote would come as part of floor debate on the fiscal 2020 defense authorization. The Senate Armed Services Committee last week turned back an effort to express opposition to military action against Iran without a new authorization from Congress, except in cases of self-defense.

Members of the Armed Services Committee voted 14-13 that an amendment from Virginia Democrat Tim Kaine was outside the jurisdiction of the panel.

“The Armed Services Committee is not able to talk about military activity in Iran. It’s like the scene in Dr. Strangelove where … there will be no fighting in the war room. It was amazing to me,” Kaine said. “I think it was surprising to a number of the members of the committee, that one day after having a classified all-members meeting to talk specifically about this issue, we were not able to take it up in the committee.”

Kaine said he and other Democratic senators would seek a floor vote during the defense debate, which could take place in the middle of June.