A protester joins march during demonstration organized by Shi'ite Houthi movement to demand government to rescind decision to curb fuel subsidies in Sanaa
A protester chews qat, a mild narcotic, as he joins a march during a demonstration organized by the Shi'ite Houthi movement to demand the government to rescind a decision to curb fuel subsidies in Sanaa August 19, 2014. Yemen raised fuel prices last month as the impoverished country tries to cut energy subsidies to ease the burden on its budget deficit. REUTERS/Khaled Abdullah (YEMEN - Tags: CIVIL UNREST POLITICS ENERGY BUSINESS)
Transportation Safety Board of Canada (TSB) chair Wendy Tadros leaves after a news conference at the Lac-Megantic Golf Club in Lac-Megantic
Transportation Safety Board of Canada (TSB) chair Wendy Tadros leaves after a news conference at the Lac-Megantic Golf Club in Lac-Megantic, August 19, 2014. The TSB released its final report on the investigation into the MMA train derailment that happened on July 6, 2013 in Lac-Megantic. REUTERS/Mathieu Belanger (CANADA - Tags: TRANSPORT DISASTER)
Members of Ukrainian self-defence battalion "Donbas" attend a ceremony to bless their battalion's flags in Mikhailovsky Cathedral in Kiev
Members of Ukrainian self-defence battalion "Donbas" attend a ceremony to bless their battalion's flags in Mikhailovsky Cathedral in Kiev August 19, 2014. REUTERS/Gleb Garanich (POLITICS CIVIL UNREST MILITARY RELIGION)
Members of Ukrainian self-defence battalion "Donbas" attend a ceremony to bless their battalion's flags in Mikhailovsky Cathedral in Kiev
Members of Ukrainian self-defence battalion "Donbas" attend a ceremony to bless their battalion's flags in Mikhailovsky Cathedral in Kiev August 19, 2014. REUTERS/Gleb Garanich (POLITICS CIVIL UNREST MILITARY RELIGION)
Members of Ukrainian self-defence battalion "Donbas" attend a ceremony to bless their battalion's flags in Mikhailovsky Cathedral in Kiev
Members of Ukrainian self-defence battalion "Donbas" attend a ceremony to bless their battalion's flags in Mikhailovsky Cathedral in Kiev August 19, 2014. REUTERS/Gleb Garanich (POLITICS CIVIL UNREST MILITARY RELIGION)
Members of Ukrainian self-defence battalion "Donbas" attend a ceremony to bless their battalion's flags in Mikhailovsky Cathedral in Kiev
Members of Ukrainian self-defence battalion "Donbas" attend a ceremony to bless their battalion's flags in Mikhailovsky Cathedral in Kiev August 19, 2014. REUTERS/Gleb Garanich (POLITICS CIVIL UNREST MILITARY RELIGION)
Members of Ukrainian self-defence battalion "Donbas" attend a ceremony to bless their battalion's flags in Mikhailovsky Cathedral in Kiev
Members of Ukrainian self-defence battalion "Donbas" attend a ceremony to bless their battalion's flags in Mikhailovsky Cathedral in Kiev August 19, 2014. REUTERS/Gleb Garanich (POLITICS CIVIL UNREST MILITARY RELIGION)
Members of Ukrainian self-defence battalion "Donbas" carry their battalion's flag to be blessed in a ceremony in Mikhailovsky Cathedral in Kiev
Members of Ukrainian self-defence battalion "Donbas" carry their battalion's flag to be blessed in a ceremony in Mikhailovsky Cathedral in Kiev August 19, 2014. REUTERS/Gleb Garanich (POLITICS CIVIL UNREST MILITARY RELIGION)
Members of Ukrainian self-defence battalion "Donbas" carry their battalion's flags to be blessed in a ceremony in Mikhailovsky Cathedral in Kiev
Members of Ukrainian self-defence battalion "Donbas" carry their battalion's flags to be blessed in a ceremony in Mikhailovsky Cathedral in Kiev August 19, 2014. REUTERS/Gleb Garanich (POLITICS CIVIL UNREST MILITARY RELIGION)
High school students run away from the riot police during a rally in downtown Santiago
High school students run away from the riot police during a rally in downtown Santiago, August 19, 2014. The rally was held after the Santiago Court of Appeals ruled in favor of prohibiting the occupations of educational institutions by students. REUTERS/Ivan Alvarado (CHILE - Tags: POLITICS CIVIL UNREST EDUCATION TPX IMAGES OF THE DAY)