You are right about 9/11, but wrong about Pearl Harbor.
FDR moved the Pacific fleet from San Diego to Pearl Harbor as bait to lure a Japanese attack, and the Japanese fell for it. When the commander of the Pacific fleet, Admiral James O Richardson, strongly protested because he said the fleet at Pearl was too vulnerable to air attack, he was relieved of his command. Before the attack our government received numerous warnings of the impending attack, including one in August 1941 by British agent Dushko Popov, Ian Fleming’s chief model for James Bond, given directly to J. Edgar Hoover in his office.
When the date of the attack drew close, our government failed to fully warn Admiral Kimmel and General Short in Hawaii, because they were afraid they would launch air patrols and scare off the Japanese fleet from attacking.
Do you have a source for this?