Sen. Lindsay Graham (R-S.C.) explained Wednesday that he flipped his vote on a resolution that would end U.S. military support for the Saudi-led campaign in Yemen’s civil war because he was “pissed” about how the Trump administration has handled Saudi Arabia following the killing of U.S.-based journalist Jamal Khashoggi.

“I changed my mind because I’m pissed,” Graham said of his vote.

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“The way the administration had handled the Saudi Arabia event is just not acceptable, the briefing [Wednesday] did not help me at all better understand the role that [Saudi Crown Prince Mohammed bin Salman] played in the killing of Mr. Khashoggi.”

The Senate voted 63-37 Wednesday to advance the resolution calling for an end to U.S. military support for the Saudi-led campaign in Yemen’s civil war despite a White House effort to block the bill.

The vote advances the resolution out of the Foreign Relations Committee, making it available for action before the full Senate.

Senators have expressed frustration with Saudi Arabia amid growing questions about the death of Khashoggi, a U.S. resident and Washington Post contributor frequently critical of Riyadh, and whether Saudi Arabia is actively trying to limit civilian deaths in Yemen.

Defense Secretary James Mattis James Norman MattisBiden courts veterans amid fallout from Trump military controversies Trump says he wanted to take out Syria's Assad but Mattis opposed it Gary Cohn: 'I haven't made up my mind' on vote for president in November MORE and Secretary of State Mike Pompeo Michael (Mike) Richard PompeoPutin nominated for Nobel Peace Prize The Hill's Morning Report - Sponsored by Facebook - Trump previews SCOTUS nominee as 'totally brilliant' Pompeo accused of stumping for Trump ahead of election MORE held a briefing on the vote on Wednesday on Capitol Hill, arguing that withdrawing U.S. support from the war would undermine efforts to improve Saudi targeting and broker peace at a time when those talks appear on the precipice of starting, according to their prepared remarks.

CIA Director Gina Haspel was not at the briefing.

Graham threatened Wednesday to withhold his vote on key items until the CIA briefs the full chamber.

Graham has not supported the underlying resolution but said he voted to get it out of the committee because “this whole process is BS” without a CIA briefing.