 This limited campaign failed to destroy significant quantities of enemy war supplies or diminish enemy ambitions.Bombing limitations were imposed by President Lyndon Johnson for geopolitical reasons, as he surmised that bombing Soviet and Chinese ships in port and killing Soviet advisers would bring the Soviets and Chinese more directly into the war.In his 1965 autobiography (co-written with MacKinlay Kantor), LeMay is quoted as saying his response to North Vietnam would be to demand that "they've got to draw in their horns and stop their aggression, or we're going to bomb them back into the Stone Age.