look... eventually there will be a breaking point....the US is calling russia and china on their bluff..... now, usa etc could very well interfere in syria militarily... if this happens, other nato allies will join.... china and russia... even iran.. may not get involved at first... if they dont, eventually, iran will be the target.. and so on... there will be a breaking point where china and russia will of had enough, and they will be thinking, its only a matter of time before they come for other countries and us too.... china russia iran etc may or may not beat usa and allies... but , the more countries that are overthrown by the usa, before a china,russia - usa war, the less chance russia and china have of winning... so , if they got the balls, and use their intelligence, if usa get involved in syria... china, russia, syria, iran should all say go f urself usa, we are at war now