US President Donald Trump arrives on stage for a Keep America Great Rally at Kellogg Arena December 18, 2019, in Battle Creek, Michigan. Brendan Smialowski | AFP | Getty Images

President Donald Trump may have set off a global firestorm, but his schedule has stayed the same. Less than a day after the U.S. announced that it killed Iran's top military leader Gen. Qasem Soleimani in a surprise airstrike in Baghdad, Trump attended the previously scheduled launch of his 2020 campaign's "Evangelicals for Trump" coalition.

The 5 p.m. ET kickoff event at King Jesus International Ministry, a 100,000-square foot Miami mega-church with room for 7,000 attendees, will be aimed at boosting support from Trump's already-loyal base of evangelical Christians. The president made an unannounced speech before his departure for the event, saying that while the U.S. does not seek regime change in Iran, it is "ready and prepared to take whatever action is necessary" if Iran threatens American lives.