[Austrian Chancellor Christian Kern, center, poses for a group after a meeting with his counterparts from Germany and West Balkans on strategies to deal with Europe's migrant crisis in Vienna, Austria, Saturday, Sept. 24, 2016. (AP Photo/Ronald Zak)]VIENNA (AP) — Austria's chancellor has convened a meeting of his German, Greek and west Balkans counterparts on strategies to deal with Europe's migrant crisis.