Tribal fighters shout slogans while holding weapons in Basra
Tribal fighters shout slogans while holding weapons in Basra, southeast of Baghdad June 18, 2014. Iraq has asked the United States for air support in countering Sunni rebels, the top U.S. general said on Wednesday, after the militants seized major cities in a lightning advance that has routed the Shi'ite-led government's army. REUTERS/ Essam Al-Sudani (IRAQ - Tags: CIVIL UNREST POLITICS)
A Mehdi Army fighter demonstrates during a military-style training in Baghdad
A Mehdi Army fighter loyal to Shi'ite cleric Moqtada al-Sadr demonstrates during a military-style training in Baghdad, June 18, 2014. Iraq has asked the United States for air support in countering Sunni rebels, the top U.S. general said on Wednesday, after the militants seized major cities in a lightning advance that has routed the Shi'ite-led government's army. REUTERS/Thaier Al-Sudani (IRAQ - Tags: CIVIL UNREST POLITICS MILITARY CONFLICT)
Mehdi Army fighters take part in a military-style training in Baghdad
Mehdi Army fighters loyal to Shi'ite cleric Moqtada al-Sadr take part in a military-style training in Baghdad, June 18, 2014. Iraq has asked the United States for air support in countering Sunni rebels, the top U.S. general said on Wednesday, after the militants seized major cities in a lightning advance that has routed the Shi'ite-led government's army. REUTERS/Thaier Al-Sudani (IRAQ - Tags: CIVIL UNREST POLITICS MILITARY CONFLICT)
The cost of global violence and unrest: US $1,350 per person
World becomes less peaceful for 7th successive year, Syria replacing Afghanistan in bottom place, according to Global Peace Index
World peace declining after long post-WWII improvement: study
Conflict in Iraq, Syria, Afghanistan, Sudan and Central African Republic helped drag down the annual Global Peace Index
Members from the oil police force stand guard at Zubair oilfield in Basra, southeast of Baghdad
Members from the oil police force stand guard at Zubair oilfield in Basra, southeast of Baghdad June 18, 2014. REUTERS/ Essam Al-Sudani (IRAQ - Tags: CIVIL UNREST POLITICS MILITARY BUSINESS COMMODITIES)
A member from oil police force stands guard at Zubair oilfield in Basra, southeast of Baghdad
A member from the oil police force stands guard at Zubair oilfield in Basra, southeast of Baghdad June 18, 2014. REUTERS/ Essam Al-Sudani (IRAQ - Tags: CIVIL UNREST POLITICS MILITARY BUSINESS COMMODITIES)
A member of the oil police force stands guard at Zubair oilfield in Basra
A member of the oil police force stands guard at Zubair oilfield in Basra, southeast of Baghdad June 18, 2014. REUTERS/ Essam Al-Sudani (IRAQ - Tags: CIVIL UNREST POLITICS MILITARY)
Members of the oil police force man a checkpoint at Zubair oilfield in Basra
Members of the oil police force man a checkpoint at Zubair oilfield in Basra, southeast of Baghdad June 18, 2014. REUTERS/ Essam Al-Sudani (IRAQ - Tags: CIVIL UNREST POLITICS MILITARY BUSINESS COMMODITIES)
A youth displaced by the fighting charges batteries with solar panels at a makeshift shop in a camp for IDPs at the UN base in Bentiu
A youth displaced by the fighting charges batteries with solar panels at a makeshift shop in a camp for internally displaced persons (IDPs) at the United Nations (UN) base in Bentiu, Unity State, June 17, 2014. Around 39,000 people have found shelter in the UN base in Bentiu. About 1.5 million people have been displaced, including 378,000 who fled to neighbouring countries, according to the UN Office for the Coordination of Humanitarian Affairs (OCHA). REUTERS/Andreea Campeanu (SOUTH SUDAN - Tags: CIVIL UNREST POLITICS SOCIETY)