What President Trump Didn’t Know About the Dec 7, 1941 Pearl Harbor Attack When He Met with Japanese Prime Minister Sanae Takaichi at the White House

A Japanese reporter asked President Trump at the White House on March 19, 2026 why he didn’t notify allies of the US plan to attack Iran ahead of time. The President noted the US need to keep the attack a surprise so the Iranians wouldn’t take defensive countermeasures. President Trump then asked the reporter why the US wasn’t notified of the Japanese attack at Pearl Harbor on Dec 7, 1941.  The Prime Minister raised her eyebrows and her smile dropped. It was an awkward moment.

What the President didn’t realize about the Pearl Harbor attack is how lucky the US actually was on December 7th.  How could the US be lucky about the Pearl Harbor attack?

Answer: The Japanese surprise attack could have been far worse for the Americans for these four reasons - not in any ranked order:

1.      The three US aircraft carriers were not in Pearl Harbor on Dec 7^th.  If they’d been there, some would have been damaged or sunk.  If that had occurred, it’s likely the battle of Midway that took place in June 1942 never would have happened.  And if that was the case then Japan would not have lost their four aircraft carriers at Midway.  How might the war have unfolded if those four Japanese aircraft carriers continued combat operations after Midway?

2.      The Japanese failed to bomb the vulnerable American fuel supplies in Hawaii.  Many historians have argued that a better battle plan would have included wiping out the fuel supplies in the 1^st or 2^nd wave. There were 4.5 million barrels (nearly 190 million gallons) that were stored in above-ground containers. Simple machine gunning would have destroyed them. If that had happened the US Navy would have had to refuel on the West Coast.  That logistical nightmare would have extended the war by up to two years, as some historians contend.

3.      The Japanese aborted their 3^rd wave attack.  The 3^rd wave was going to destroy American fuel, but it was cancelled because the Japanese feared a counterattack by the American aircraft carriers. The Japanese were also low on fuel and faced severe pilot exhaustion from their initial and secondary aerial attacks.

4.      The Japanese did not invade Hawaii with ground troops.  A couple of battle-hardened divisions might have overwhelmed the Americans if the Japanese had invaded.  There were very few American combat-ready troops at Pearl Harbor and in the aftermath of the bombing they would have been in total disarray.  If the Japanese had captured Hawaii, and retained the fuel for their own use, the course of the war in the Pacific would have been very different.

Call it luck or the vagaries of war.  Either way, the Japanese attack on December 7, 1941 of Pearl Harbor, could have been far worse for the Americans than it was.