Europe's Migrant Crisis - Sept. 19, 2015

Migrants and refugees board a train from Vienna to Salzburg at the Westbahnhof train station in Vienna, Sept. 19, 2015.

Migrants queue up for buses after they arrived at the border between Austria and Hungary near Heiligenkreuz, about 180 kms (110 miles) south of Vienna. Thousands of migrants who had been stuck for days in southeastern Europe started arriving in Austria early Saturday after Hungary escorted them to the border.

Migrants waiting for buses at the border between Austria and Hungary.

A migrant man reacts as he is surrounded by Slovenian police at the Slovenia-Croatia border crossing in Rigonce, Slovenia, Sept. 19, 2015.

A medium-range ballistic missile target is launched from the Pacific Missile Range Facility in Kauai, Hawaii, during Flight Test Standard Missile-27, Event 2. The target was successfully intercepted by SM-6 missiles fired from the guided-missile destroyer destroyer USS John Paul Jones.

A girl hugs a teddy bear on the arrival at a transit camp near the southern Macedonian town of Gevgelija, after crossing the border with Greece.

Migrants and refugees walk around tents as they wait after Turkish police forces block them on a highway near Edirn during their march to the border between Turkey and Greece.

Migrants in a dinghy paddle their craft after leaving Bodrum, Turkey, in the hopes of crossing the Mediterrean Sea to reach the Greek Island of Kos. Of the record total of 432,761 refugees and migrants making the perilous journey across the Mediterranean to Europe so far this year, an estimated 309,000 people had arrived by sea in Greece.

A line is thrown from a Turkish Coast Guard ship off the shores of Bodrum, Turkey, as migrants in a dinghy paddle on Mediterrean Sea in a failed attempt of crossing to the Greek island of Kos.

A group of Iraqi refugees pose for a photograph after disembarking the Blue Star Patmos passenger ship at the port of Piraeus, near Athens.

A refugee boy plays a violin as hundreds of migrants camp for a second day as they try to march down a highway towards Turkey’s western border with Greece and Bulgaria, near Edirne, Turkey.