President Donald Trump vacillated between insults and well wishes after the resignation of British Prime Minister Keir Starmer on Monday, bashing him over energy and his noninvolvement in the war with Iran.

Trump and Starmer had a contentious relationship, reaching a low point during the Iran war, when the United Kingdom went along with most NATO countries in declining to support the U.S. in the conflict. Trump seemed to openly have mixed feelings after Starmer resigned on Monday, voicing alternating niceties and insults while answering questions in the Oval Office.