President Biden doesn’t give many sit-down television interviews, but when he does, he tends to make news. This week he sat down for an on-air session with CNN’s Erin Burnett, who asked him point-blank whether US bombs given to Israel have caused civilian casualties in Gaza.

Biden’s response was notable not necessarily because the answer was a mystery (of course US bombs have killed civilians there) but rather because Biden showed a considerable degree of frustration with Israel’s war strategy. ‘Civilians