Human rights groups warn that a Turkish invasion could trigger a new exodus of refugees, and worsen an already dire humanitarian crisis in northern Syria.
Turkey eyes a new military operation in northern Syria, leaving people in the area on edge
Jordan Matson, from Racine, Wisconsin, was once a soldier in the US Army. Today Matson is a volunteer fighter with a Kurdish militia in northern Syria, fighting against ISIS and hoping to bring more Americans over to join the war.