Or perhaps for what they did in Nanjing. Maybe they were Yotze in WWII, maybe not. They never officially acknowledged the extent of what was done.
Once we’re on this topic:
Many people are aware of the the Maamar Chazal that punishment only comes comes because of the Yidden. I’ve heard it explained that it is a sign to us or instead of us. The Maharal explains, though, that Hashem punishes those who deserve it. However, since non Jews wouldn’t learn a lesson from tragedies, there would be no point. The only reason that Hashem punishes those who deserve it is to show us that there is a Dayan.