On July 21, 1951, Lt. Gen. Matthew Ridgway, having recently replaced General Douglas MacArthur as commander in chief, Far East and United Nations Command, informed the Joint Chiefs of Staff (JCS) that he planned "an all out air strike on Pyongyang" with 140 bombers and 230 fighters, to be take place on the first clear night after July 24. Under the proposal, warning flyers would be dropped in advance of the attack. The Joint Chiefs of Staff ordered Ridgway to defer the attack pending further instructions, due to concerns about the political implications.