U.S. Rep. Tulsi Gabbard said on Sunday that she will resign as vice-chair of the Democratic National Committee and endorse self-avowed democratic socialist Bernie Sanders for president.

Gabbard, a combat veteran deployed twice to Iraq, has been engaged in a long-running feud with DNC chairwoman Debbie Wasserman Schultz, who is widely seen as a staunch supporter of Hillary Clinton.

“I think it ‘s most important for us, as we look at our choices as to who our next commander in chief will be, is to recognize the necessity to have a commander in chief who has foresight, who exercises good judgment,” the Hawaii Democrat said on NBC’s “Meet the Press.”

“As a veteran and as a soldier I’ve seen firsthand the true cost of war,” Gabbard told moderator Chuck Todd. “I served in a medical unit during my first deployment, where every single day I saw firsthand the very high human cost of that war. I see it in my friends who now, a decade after we’ve come home, are still struggling to get out of a black hole.”

As for the decision to support Sanders, Politico reported that Gabbard sent an email to her fellow DNC officers, saying that “after much thought and consideration, I’ve decided I cannot remain neutral and sit on the sidelines any longer.”

“There is a clear contrast between our two candidates with regard to my strong belief that we must end the interventionist, regime change policies that have cost us so much,” she wrote in the email. “This is not just another ‘issue.’ This is THE issue, and it’s deeply personal to me. This is why I’ve decided to resign as Vice Chair of the DNC so that I can support Bernie Sanders in his efforts to earn the Democratic nomination in the 2016 presidential race.”