The Iranian regime gives financial support to terrorist organizations all over the world, denies the Holocaust, and calls for the wiping the state of Israel from the map, while developing long-range missiles and trying to obtain nuclear weapon.
Our policy for the last many years has been to deter the Chinese government in Beijing from ever coming into the position where they thought they had enough leverage over the U.S. to cross the Straits of Taiwan.
Hard though it may be to accept, remember that guilt is sometimes a friendly internal voice reminding you that you're messing up.