It didn't take long for Trump to insult Japan.
I think we can confidently say that everything Trump knows about Japan came from movies like Kurosawa's Seven Samurai.
The Japan Times:
U.S. President Donald Trump has said Japan should have shot down the North Korean missiles that flew over the country before landing in the Pacific Ocean earlier this year, diplomatic sources have said, despite the difficulties and potential ramifications of doing so.
"The U.S. president said he could not understand why a country of samurai warriors did not shoot down the missiles, the sources said."
Only in the Trump administration do ancient racial stereotypes rule!