Many American officials were public leaders in war that already have killed about a million. Would it be ok for foreign governments to liquidate those people,

Many American officials were public leaders in war that already have killed about a million. Would it be ok for foreign governments to liquidate those people, or should they conduct the formality of convincing them first? Once again - you’re assuming US was the good guys there. Which is quite an absurd assumption if you look at the numbers instead of propaganda.