Riot police clear a street with smoke bombs while clashing with demonstrators in Ferguson, Missouri
Riot police clear a street with smoke bombs while clashing with demonstrators in Ferguson, Missouri August 13, 2014. Police in Ferguson fired several rounds of tear gas to disperse protesters late on Wednesday, on the fourth night of demonstrations over the fatal shooting last weekend of an unarmed black teenager Michael Brown, 18, by a police officer on Saturday after what police said was a struggle with a gun in a police car. A witness in the case told local media that Brown had raised his arms to police to show that he was unarmed before being killed. REUTERS/Mario Anzuoni (UNITED STATES - Tags: CRIME LAW CIVIL UNREST)
Riot police clear demonstrators from a street in Ferguson
Riot police clear demonstrators from a street in Ferguson, Missouri, August 13, 2014. Police in Ferguson fired several rounds of tear gas to disperse protesters late on Wednesday, on the fourth night of demonstrations over the fatal shooting last weekend of an unarmed black teenager Michael Brown, 18, by a police officer on Saturday after what police said was a struggle with a gun in a police car. A witness in the case told local media that Brown had raised his arms to police to show that he was unarmed before being killed. REUTERS/Mario Anzuoni (UNITED STATES - Tags: CRIME LAW CIVIL UNREST)
An armed pro-Russian separatist holds an ammunition part shortly after a shelling in Donetsk
An armed pro-Russian separatist holds an ammunition part shortly after a shelling in Donetsk, August 14, 2014. Artillery shells hit close to the centre of Ukraine's separatist-held city of Donetsk for the first time on Thursday, killing at least one person, as a large Russian aid convoy rumbled towards the border. REUTERS/Sergei Karpukhin (UKRAINE - Tags: POLITICS CIVIL UNREST CONFLICT MILITARY)
Displaced people from the minority Yazidi sect, who fled the violence from forces loyal to the Islamic State in Sinjar town, take shelter in Mount Sinjar
Displaced people from the minority Yazidi sect, who fled the violence from forces loyal to the Islamic State in Sinjar town, take shelter in Mount Sinjar August 13, 2014. A U.S. mission to evacuate Iraqi civilians trapped on a mountain by Sunni militant fighters is far less likely after a U.S. assessment team sent there on Wednesday found the humanitarian situation not as grave as expected, the Pentagon said. Picture taken August 13, 2014. REUTERS/Rodi Said (IRAQ - Tags: POLITICS CIVIL UNREST)
Displaced people from the minority Yazidi sect, who fled the violence from forces loyal to the Islamic State in Sinjar town, take shelter in Mount Sinjar
Displaced people from the minority Yazidi sect, who fled the violence from forces loyal to the Islamic State in Sinjar town, take shelter in Mount Sinjar August 13, 2014. A U.S. mission to evacuate Iraqi civilians trapped on a mountain by Sunni militant fighters is far less likely after a U.S. assessment team sent there on Wednesday found the humanitarian situation not as grave as expected, the Pentagon said. Picture taken August 13, 2014. REUTERS/Rodi Said (IRAQ - Tags: POLITICS CIVIL UNREST)
A fire truck travels on a road in Groveland
A fire truck travels on a road in Groveland, California July 29, 2014. Long, heavy logging trucks, swaying with the weight of charred California pines, wind through the forest near Yosemite National Park, part of an effort to clean up from last year�s devastating wildfires even as new blazes break out this summer. Picture taken July 29, 2014. To match Feature USA-CALIFORNIA/WILDFIRES REUTERS/Robert Galbraith (UNITED STATES - Tags: ENVIRONMENT DISASTER)
Displaced people from the minority Yazidi sect, who fled the violence from forces loyal to the Islamic State in Sinjar town, take shelter in Mount Sinjar
Displaced people from the minority Yazidi sect, who fled the violence from forces loyal to the Islamic State in Sinjar town, take shelter in Mount Sinjar August 13, 2014. A U.S. mission to evacuate Iraqi civilians trapped on a mountain by Sunni militant fighters is far less likely after a U.S. assessment team sent there on Wednesday found the humanitarian situation not as grave as expected, the Pentagon said. Picture taken August 13, 2014. REUTERS/Rodi Said (IRAQ - Tags: POLITICS CIVIL UNREST)
Displaced people from the minority Yazidi sect, who fled the violence from forces loyal to the Islamic State in Sinjar town, take shelter in Mount Sinjar
Displaced people from the minority Yazidi sect, who fled the violence from forces loyal to the Islamic State in Sinjar town, take shelter in Mount Sinjar August 13, 2014. A U.S. mission to evacuate Iraqi civilians trapped on a mountain by Sunni militant fighters is far less likely after a U.S. assessment team sent there on Wednesday found the humanitarian situation not as grave as expected, the Pentagon said. Picture taken August 13, 2014. REUTERS/Rodi Said (IRAQ - Tags: POLITICS CIVIL UNREST)
Displaced people from the Yazidi religious minority take shelter in Mount Sinjar
Displaced people from the Yazidi religious minority, who fled the violence from forces loyal to the Islamic State in Sinjar town, take shelter in Mount Sinjar August 13, 2014. A U.S. mission to evacuate the Iraqi civilians trapped on the mountain by Sunni militant fighters is far less likely after a U.S. assessment team sent there on Wednesday found the humanitarian situation not as grave as expected, the Pentagon said. Picture taken August 13, 2014. REUTERS/Rodi Said (IRAQ - Tags: POLITICS CIVIL UNREST)
Displaced people from the Yazidi religious minority take shelter in Mount Sinjar
Displaced people from the Yazidi religious minority, who fled the violence from forces loyal to the Islamic State in Sinjar town, take shelter in Mount Sinjar August 13, 2014. A U.S. mission to evacuate the Iraqi civilians trapped on the mountain by Sunni militant fighters is far less likely after a U.S. assessment team sent there on Wednesday found the humanitarian situation not as grave as expected, the Pentagon said. Picture taken August 13, 2014. REUTERS/Rodi Said (IRAQ - Tags: POLITICS CIVIL UNREST)