The all-caps post came hours after weekend bombings in Iran rattled oil markets and reignited fears of rising fuel costs.

European nations worked Monday to keep alive diplomatic efforts to curb the Israel-Iran war as the two countries traded strikes following the United States’ weekend attack on Iran’s nuclear program.

Trump announced on Saturday that the United States had completed a “very successful attack” on Iran’s key nuclear facilities — including Fordo, Natanz and Isfahan — in a post on his Truth Social platform. He wrote that a “full payload of BOMBS” were dropped, and U.S. planes were safely on their way home.