Officials hew closely to secret memo which gives legal cover to firing on boats even if it would kill people on board

Trump administration officials have defended carrying out a follow-up strike on a drug boat that killed survivors on 2 September by arguing that its objective was to ensure the complete destruction of the boat, an action the Pentagon had internal legal approval to conduct.

The White House press secretary Karoline Leavitt said in a briefing on Monday that Adm Frank Bradley, who oversaw the operation and gave the order for the second strike, directed it to sink the boat.