President Trump went after form Secretary of State John Kerry in a Twitter post Monday morning, regarding the recent revelation that Kerry is quietly engaging in some unusual “shadow diplomacy” with a top Iranian official, in an effort to salvage the Iran deal which he helped craft.

Trump tweeted in outrage, “The United States does not need John Kerry’s possibly illegal Shadow Diplomacy on the very badly negotiated Iran Deal. He was the one that created this MESS in the first place!”