"Hey, Mitt: America demonstrated that she's an unreliable ally a long time ago in that one war over in southeast Asia that you missed out on. Remember that war? The one where our allies were doing just fine 'til Congress cut them off? You might wanna compare notes with John Kerry; it's seared into his brain.
"Let's talk some more about unreliable allies. When Mitt expressed interest in the SecState job, and in spite of Romney's unfriendliness, Donald Trump interviewed him for the position. Even before the president decided on the pick, Mitt was over in Europe, bad-mouthing his own president.
"Then when Mitt was running for the Senate in Utah, and despite the above backstabbery, he sought and got an ally in Trump. The president went to Utah and spoke up for Candidate Romney. Soon after winning the election, the same Mitt Romney published a lengthy op-ed in the Washington Post assassinating the president's character.