The ill kept secret of Pearl Harbour

When Woke Google has, as its lead:

The U.S. Navy was aware of the traditional planning of the Imperial Japanese Navy for war with the U.S., as maintained throughout the 1930s and into the 1940s. The Japanese made no secret of it, and in the 1930s American radio intelligence gave U.S. war planners considerable insight in Japanese naval exercises.

... and when Woke Wiki chimes in:

One perspective is given by Rear Admiral Frank Edmund Beatty Jr., who at the time of the Pearl Harbor attack was an aide to the Secretary of the NavyFrank Knox and was very close to President Franklin D. Roosevelt's inner circle, remarked that:

Prior to December 7, it was evident even to me... that we were pushing Japan into a corner. I believed that it was the desire of President Roosevelt, and Prime Minister Churchill that we get into the war, as they felt the Allies could not win without us and all our efforts to cause the Germans to declare war on us failed; the conditions we imposed upon Japan—to get out of China, for example—were so severe that we knew that nation could not accept them. We were forcing her so severely that we could have known that she would react toward the United States. All her preparations in a military way — and we knew their over-all import — pointed that way.^[26]

Another "eye witness viewpoint" akin to Beatty's is provided by Roosevelt's administrative assistant at the time of Pearl Harbor, Jonathan Daniels; it is a telling comment about FDR's reaction to the attack – "The blow was heavier than he had hoped it would necessarily be. ... But the risks paid off; even the loss was worth the price. ..."^[27]

... then there are fairly high odds that there were certain shenanigans involved.  As it was 'steal the gold' Roosevelt involved as well ... well there it is.  These are not our friends.