MAybe because Russia and China do not go runnning round invading countries on lies and bullsh!t because of mystical WMDs
Maybe because Russia and China bo not go around (or at least to the same extent) dictating to other countries what weapons they should or should not have and threatening them for none compliance to the US's views.
While at the same time acting in a manner they critisize and condem others for.
If the US wants to claim the high moral ground on issues like this but in reality act no different to those they look down on then they deserve all the critisism they get regardless where it comes from
