It is good to have the power to uphold justice. However, the more such power and authority is given, the stronger one must seek out to destroy the injustice on his own side.
America strives to be such a force, especially in other nations, however, when it fails to take care of the tiniest injustice committed by Americans against other nations, it will back fire badly. Very badly.
This is why I would say and have said: If you are not truly, completely for God, He will not only take away what He's given you, but rightly, justice, takes away what you already have and give to another, even your very enemies.
Therefore, be careful also, in how we judge other nations. Though we do not succumb to the wickedness of others, we must even pay more attention to not think ourselves so great that we do not need to discipline our own or give our own smallest wickedness a free pass.