U.S. Senator Bernie Sanders has publicly questioned President Donald Trump’s decision to order an attack on Iran. In an Instagram post on Sunday, Sanders wrote that Trump justified the strike by claiming Iran should not possess nuclear weapons, a reasoning Sanders appeared to challenge.

Referring to statements made in June, Sanders noted that Trump had previously declared Iran’s nuclear facilities completely destroyed after a 12-day conflict. He concluded his post with the remark, “Vietnam, Iraq, Iran. Another lie, another war,” suggesting skepticism toward the administration’s justification for military action.

The post adds to ongoing debate in the United States over the rationale and transparency behind recent military operations targeting Iran.