In the letter, Mr. Kent wrote about what he saw as a “misinformation campaign” by high-ranking Israeli officials and the news media, which he said had undermined Mr. Trump’s “America First platform and sowed pro-war sentiments to encourage a war with Iran.”

“As a veteran who deployed to combat 11 times and as a Gold Star husband who lost my beloved wife Shannon in a war manufactured by Israel, I cannot support sending the next generation off to fight and die in a war that serves no benefit to the American people nor justifies the cost of American lives,” he wrote.

Mr. Kent has been a key adviser to Tulsi Gabbard, the director of national intelligence, and has been a voice advocating inside the administration for a more restrained foreign policy.

Moderate imperialist resigns, cites other imperialists being too extreme for him, blames proxy for empire’s rabid tendencies