Turkey is increasingly concerned about the proliferation of Al Qaeda-linked fighters along its border with Syria. This week its military fired on jihadist targets in Syria.
The following regions and issues are among those critical to both short- and long-term US interests. They should draw greater US attention and diplomatic efforts.
While western Iraq is in the hands of Al Qaeda, recent trends suggest there's no safe oil investment refuge even in the Kurdish north, Graeber writes.
Syria's neighbors have been far more generous than the US in temporarily resettling millions of refugees. If the US and Europe can now share this burden, it may influence the war's outcome.
Turkey was an early supporter of Syria's rebellion, keeping its border open for refugees and aid, but has became wary of jihadi groups operating on its turf.