Earlier in the weekend, Trump ordered attacks on three key sites in Iran's uranium enrichment infrastructure, which were carried out using 30,000-pound bunker-busting bombs. Then, on Sunday, he mused that if the current regime was "unable to MAKE IRAN GREAT AGAIN, why wouldn't there be a Regime change??? MIGA!!!"

In response, Kristol quipped back, "brb – starting up PNAC again…" referencing the defunct neoconservative think tank Project for the New American Century (PNAC), which famously pushed for the 2003 Iraq War.