Reuters wins Pulitzer for photography of migrant crisis
An overcrowded inflatable boat with Syrian refugees drifts in the Aegean sea between Turkey and Greece after its motor broke down off the Greek island of Kos, August 11, 2015. REUTERS/Yannis Behrakis
A Syrian refugee holding a baby in a life tube swims towards the shore after their dinghy deflated some 100m away before reaching the Greek island of Lesbos, September 13, 2015. REUTERS/Alkis Konstantinidis
The body of an unidentified migrant is seen on a beach after being washed ashore, on the Greek island of Lesbos, November 7, 2015. REUTERS/Alkis Konstantinidis
An Afghan migrant jumps off an overcrowded raft onto a beach at the Greek island of Lesbos October 19, 2015. REUTERS/Yannis Behrakis
A Syrian refugee holds onto his children as he struggles to walk off a dinghy on the Greek island of Lesbos, after crossing a part of the Aegean Sea from Turkey to Lesbos September 24, 2015. REUTERS/Yannis Behrakis
Amoun, 70, a blind Palestinian refugee who lived in the town of Aleppo in Syria, rests on a beach moments after arriving along with another 40 people on a dinghy in the Greek island of Kos, crossing a part of the Aegean Sea from Turkey to Greece,...more
An Afghan migrant is seen inside a bus following his arrival by the Eleftherios Venizelos passenger ferry with over 2,500 migrants and refugees from the island of Lesbos at the port of Piraeus, near Athens, Greece, October 8, 2015. REUTERS/Yannis...more
Migrants make their way on foot on the outskirts of Brezice, Slovenia October 20, 2015. REUTERS/Srdjan Zivulovic
A Syrian refugee tries to catch his breath as he stands in a crowded line to get registered in the national stadium of the Greek island of Kos, August 12, 2015. REUTERS/Alkis Konstantinidis
Syrian migrants cross under a fence as they enter Hungary at the border with Serbia, near Roszke, August 27, 2015. REUTERS/Bernadett Szabo
A Macedonian police officer raises his baton towards migrants to stop them from entering into Macedonia at Greece's border near the village of Idomeni, Greece, August 22, 2015. REUTERS/Alexandros Avramidis
Migrants and refugees beg Macedonian policemen to allow passage to cross the border from Greece into Macedonia during a rainstorm, near the Greek village of Idomeni, September 10, 2015. REUTERS/Yannis Behrakis
A policeman tries to stop a migrant from boarding a train through a window at Gevgelija train station in Macedonia, close to the border with Greece, August 15, 2015. REUTERS/Stoyan Nenov
Hungarian policemen stand over a family of immigrants who threw themselves onto the track before they were detained at a railway station in the town of Bicske, Hungary, September 3, 2015. REUTERS/Laszlo Balogh
Syrian refugees walk through the mud as they cross the border from Greece into Macedonia, near the Greek village of Idomeni, September 10, 2015. REUTERS/Yannis Behrakis
Immigrants are escorted by German police to a registration center, after crossing the Austrian-German border in Wegscheid near Passau, Germany, October 20, 2015. REUTERS/Michael Dalder
A Syrian refugee kisses his daughter as he walks through a rainstorm towards Greece's border with Macedonia, near the Greek village of Idomeni, September 10, 2015. REUTERS/Yannis Behrakis
The Iraqi army takes their fight against Islamic State to the airwaves, broadcasting into IS-held territory near Mosul.
A bomb explodes on a bus in Jerusalem.
The fragile state, with a new government in place, is vulnerable to attacks from Islamic State and rival fighting between armed factions.
Chile's Volcano Villarrica contains a rare active lava lake within its crater.