The Senate for the first time approved a war powers resolution Tuesday seeking to block U.S. military action against Iran, as lawmakers warily watch President Donald Trump’s efforts to resolve a conflict that the administration launched on its own and now needs Congress to fund.

It was the 10th time the Senate has tried to stop the war, and the outcome, on a vote of 50-48, was a stunning turnaround from past efforts. While the resolution is largely symbolic, and does not carry the full force of law, it reflects the growing concerns from a number of Republican lawmakers in both the House and Senate over both the war and the deal Trump struck with Iran to end it. The House approved the resolution earlier this month.

“Time after time, the vast majority of Senate Republicans sided with Trump and his war instead of the American people,” said Senate Democratic Leader Chuck Schumer of New York.

Schumer said Americans have paid the price for “Trump’s historic blunder in Iran. It’ll go down in the history books as one of the worst foreign policy forays America has ever made.”

In the past, as many as four GOP senators have voted for the war powers resolutions, and they did so Tuesday — Republicans Lisa Murkowski of Alaska, Susan Collins of Maine, Rand Paul of Kentucky and Bill Cassidy of Louisiana. One Democrat, Sen. John Fetterman of Pennsylvania, voted against.

On this vote, the absence of two Republicans, including Sen. Mitch McConnell of Kentucky, who was admitted to the hospital recently for an undisclosed matter, left the GOP without a full majority to halt the effort. Sen. Dave McCormick, R-Pa., also missed the vote.

The vote comes as the Pentagon is seeking $80 billion from Congress mostly for the Iran war as it backfills munitions and stockpiles.