The US do not pursue humanitarian objectives or the wishes of others, it pursues objectives determined by its own power considerations (and practical). That leads the US to consider different positions at different times. In Afghanistan the initial position was to hunt down Al qaeda. Move forward a couple of years of absolute and utter confusion and failure and the position and objectives were different, and it was all Saddam and Iraq. Move forward again and the US now support the very same elements in Syria that you initially went into Afghanistan to root out. (Not that Assad is better – but there must be some peace movement in Syria to support.) Now the US has a long history of being opportunistic and Kissinger famously said America has no permanent friends or enemies, only interests. Now add to this that America is spending more on military than the next top ten countries combined. The Trump administration increase of defence budget of 80 Bn. is more than Russia spend in total (61 Bn.). It’s more than the estimated 60 Bn. that free college would cost the US taxpayers. Any more justification to this order or blaming others for this is madness. It’s a situation owned by US policy makers and all the rest of us can do is hope and try to persuade you Americans to vote in less insane people next time. Like Socrates99 says the time to do that is the dem primaries.