Where's Europe on this? Why aren't there British, French, German, etc forces protecting the Kurds?
The first reason is: they had an alliance with the US, not with Europe; the deal was made with the US and was broken by the US.
The second reason is: the kurds are a specific group and have more in common, on a cultural point of view, with the West than any of the other ethnic group in the region, but they are not "westerners in middle-east". Surely not more than parts of the syrian arab insurgents in Aleppo and the like.
Like the insurgents in western Syria, the US, being an international SuperPower with interests and money beyond Europe's at the moment, the kurds were helped, supported and in a sense "recruited" by the US to be the "boots on the ground" of operations; in particular, the US supported the insurgents in western Syria against Al Assad (but they were crushed, being just urban civilians against someone with an army and an air-force), and the kurds in eastern Syria against ISIS (and they were successful against a fiercer but lonelier enemy and thanks to the US, Russian and Iranian support in the fight against a common foe.
The third reason is: most of the european public opinion has always been supportive of the kurds: the strongest support has always come from the left, the extreme left and the neo-communist (which are more centred and more extreme than whatever you may think as extreme left in the US). They have sent volunteers fighting and dying on the ground beside the kurds (in Kobane, for example), so I suppose more Europe where there than US, cause blood is maybe less useful, but surely thicker than cash.
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Apart from that, don't get touchy: if the US do something wrong, it won't be anyone else's actions that will reduce the error or will make it less of a defeat.
Stop trying to ignore what happened and stop blaming everyone else but you (the US) because you have problems judging your own actions.