In 1985 Frost grilled the prime minister about the sinking of the Argentine ship Belgrano by a British submarine that killed 323 sailors during the Falklands conflict. As Frost pressed on with questions about what had happened, a visibly ruffled Thatcher sternly defended her decision to attack the ship. After being confronted with a barrage of questions, Thatcher finally said in frustration: "Do you think, Mr. Frost, that I spend my days prowling round the pigeon holes of the Ministry of Defense to look at the chart of each and every ship? If you do you must be bonkers."