Israel’s spy chief, David Barnea, said on Tuesday that the war in Iran had delivered a severe blow to the Iranian regime but that Israel’s mission would be complete only once the regime was replaced, suggesting that Israel is still working to that end. In rare public remarks, broadcast from a ceremony marking Israel’s Holocaust Remembrance Day on Tuesday, Mr. Barnea, the head of the Mossad intelligence agency, appeared to address domestic criticism that Israel had not achieved its war goals. In particular, many Israelis have expressed disappointment that Iran’s power structure has survived. Mr. Barnea also appeared to push...