A fighter of Libyan forces allied with the U.N.-backed government prays in front of his sniper rifle during a battle with Islamic States fighters in Sirte, Libya, July 21, 2016. REUTERS/Goran Tomasevic TPX IMAGES OF THE DAY

Libyan forces allied with the U.N.-backed government fire weapons during a battle with IS fighters in Sirte, Libya, July 21, 2016. REUTERS/Goran Tomasevic TPX IMAGES OF THE DAY

Shi'ite volunteers secure the area from predominantly Sunni militants from the Islamic State, previously called the Islamic State in Iraq and the Levant (ISIL), in the desert region between Kerbala and Najaf, south of Baghdad, July 3, 2014. Iraqi insurgents are preparing for an assault on Baghdad, with sleeper cells planted inside the capital to rise up at "Zero Hour" and aid fighters pushing in from the outskirts, according to senior Iraqi and U.S. security officials. REUTERS/Alaa Al-Marjani (IRAQ - Tags - Tags: POLITICS CIVIL UNREST CONFLICT)

A pro-Russian separatist shows an anti-tank rifle in Seversk (Siversk), Donetsk region June 22, 2014. REUTERS/Shamil Zhumatov (UKRAINE - Tags: POLITICS CIVIL UNREST CONFLICT)

A pro-Russian separatist shows an anti-tank rifle in Seversk (Siversk), Donetsk region June 22, 2014. REUTERS/Shamil Zhumatov (UKRAINE - Tags: POLITICS CIVIL UNREST CONFLICT)

A pro-Russian separatist shows an anti-tank rifle in Seversk (Siversk), Donetsk region June 22, 2014. REUTERS/Shamil Zhumatov (UKRAINE - Tags: POLITICS CIVIL UNREST CONFLICT)

A pro-Russian rebel aims his anti-tank rifle between blocks of concrete at a frontline rebel position near the eastern Ukrainian village of Semenivka May 16, 2014. REUTERS/Yannis Behrakis (UKRAINE - Tags: POLITICS CIVIL UNREST CONFLICT TPX IMAGES OF THE DAY)

A Free Syrian Army trainer addresses fellow fighters as he conducts a demonstration on how to use anti-tank and anti-aircraft weapons at a training camp in the northern countryside of Aleppo March 31, 2014. Picture taken March 31, 2014. REUTERS/Ammar Abdullah (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)

Ukrainian soldiers fortify a military check point by a camp on a field the Ukrainian Army forces set up close to the Russian border in east Ukraine March 21, 2014. REUTERS/Yannis Behrakis (UKRAINE - Tags: CIVIL UNREST POLITICS CONFLICT)

Chadian soldiers hold their weapons at the airport of the recently recaptured town of Gao January 28, 2013. The troops are part of a larger African force known as AFISMA, which is due to send more than 8,000 soldiers to Mali to aid in the country's fight against Islamist militants. French and Malian troops retook the major Saharan trading towns of Gao and Timbuktu at the weekend. Picture taken January 28, 2013. REUTERS/Adama Diarra (MALI - Tags: POLITICS CIVIL UNREST MILITARY)

Hamas militants celebrate what they say is a victory over Israel after an eight-day conflict during a rally in the northern Gaza Strip November 22, 2012. A ceasefire between Israel and Gaza's Hamas rulers took hold on Thursday after eight days of conflict, although deep mistrust on both sides cast doubt on how long the Egyptian-sponsored deal can last. REUTERS/Suhaib Salem (GAZA - Tags: CONFLICT POLITICS TPX IMAGES OF THE DAY)

A Free Syrian Army fighter fires an RPG after a Syrian Army tank shell hit a building across a street during heavy fighting in Salaheddine neighborhood of central Aleppo in this August 11, 2012 file photo. There is the first in a series of three pictures. In this you can see the tree being hit with the shrapnel. In the second you can see a rebel firing an RPG and the third is just after he fired the RPG. For me, the first one is the most powerful, all shot on a 16mm lens, because you can really see the effect of the shrapnel. It was a very dramatic situation with smoke from the tank shells filling the street behind the fighters. REUTERS/Goran Tomasevic/Files (SYRIA - Tags: CIVIL UNREST CONFLICT MILITARY POLITICS)

ATTENTION EDITORS - PICTURE 09 OF 16 FOR PACKAGE 'INSIDE SYRIA WITH THE REBELS'

Free Syrian Army fighters take cover behind sand bags during clashes in Aleppo August 12, 2012. REUTERS/Goran Tomasevic (SYRIA - Tags: CIVIL UNREST CONFLICT POLITICS)

A French Foreign Legion soldier loads his FAMAS assault rifle during a seven-day training course in anti-tank, sniper, and mortar weapons at the Surinamese Army's OP Savanna military base in district Brokopondo, December 15, 2011. Eighty French Foreign Legion soldiers of at least 25 different nationalities will return from their training on Friday to be stationed starting next week at France's Kourou Airspace centre in French Guiana. REUTERS/Ranu Abhelakh (SURINAME - Tags: MILITARY POLITICS)

French Foreign Legion soldiers gets ready to run with a Milan anti-tank missile launcher (R) during a seven-day training course in anti-tank, sniper, and mortar weapons at the Surinamese Army's OP Savanna military base in district Brokopondo, December 15, 2011. Eighty French Foreign Legion soldiers of at least 25 different nationalities will return from their training on Friday to be stationed starting next week at France's Kourou Airspace centre in French Guiana. REUTERS/Ranu Abhelakh (SURINAME - Tags: MILITARY POLITICS)

A French Foreign Legion soldier loads his sniper rifle during a seven-day training course in anti-tank, sniper, and mortar weapons at the Surinamese Army's OP Savanna military base in district Brokopondo, December 15, 2011. Eighty French Foreign Legion soldiers of at least 25 different nationalities will return from their training on Friday to be stationed starting next week at France's Kourou Airspace centre in French Guiana. REUTERS/Ranu Abhelakh (SURINAME - Tags: MILITARY POLITICS)

Libyan government fighters shoot from the roof of a building at pro-Gaddafi forces in Sirte October 16, 2011. Libyan government fighters battled on Sunday to subdue pockets of resistance by pro-Gaddafi fighters, whose refusal to abandon the ousted leader's hometown of Sirte is delaying Libya's move to democracy. REUTERS/Saad Shalash (LIBYA - Tags: POLITICS CIVIL UNREST)

Libyan rebel fighters with the Tripoli Revolutionary Brigade take part in a live firing exercise during a graduation event near Nalut in western Libya, August 6, 2011. REUTERS/Bob Strong (LIBYA - Tags: POLITICS CONFLICT)

Soldiers loyal to Ivory Coast presidential claimant Alassane Ouattara gather before moving to the front line during fighting on the northern outskirts of Abidjan April 8, 2011. Forces loyal to Laurent Gbagbo, besieged in his Abidjan residence, have retaken ground and are edging closer to where rival presidential claimant Ouattara is holed up, the United Nations said. Picture taken April 8, 2011. REUTERS/Emmanuel Braun (IVORY COAST - Tags: POLITICS CIVIL UNREST CONFLICT)

Rebel fighters hold rocket-propelled grenades (RPGs) as they drive through a checkpoint west of Ajdabiyah March 31, 2011. Rebels fought on Thursday for control of the eastern Libyan oil town of Brega, a day after troops loyal to Muammar Gaddafi drove them back along a coastal strip under a hail of rocket fire. Some rebel forces had fallen back on Wednesday as far as the strategic town of Ajdabiyah, the gateway to the east and about 150 km (90 miles) south of the rebel stronghold of Benghazi. REUTERS/Andrew Winning (LIBYA - Tags: CONFLICT MILITARY POLITICS IMAGES OF THE DAY)

A man sits on an army armoured vehicle in the eastern Libyan town of Shahat February 24, 2011. REUTERS/Goran Tomasevic (LIBYA - Tags: POLITICS CIVIL UNREST)

A soldier gestures as he keeps watch for snipers on the roof in downtown Tunis January 17, 2011. Tunisian security forces used water cannon, tear gas and fired shots in the air on Monday as demonstrators took to the streets demanding that the ruling party of the ousted president give up power. REUTERS/Zohra Bensemra (TUNISIA - Tags: POLITICS MILITARY)

Suriname's Defense Minister Lamure Latour (R) receives instructions from French Foreign Legion soldiers on how to fire a Famas rifle at the Surinamese army's OP Savanna military base during a six-day infantry exercise in Para District, December 13, 2010. Some 70 soldiers, from at least 15 different nationalities within the French Foreign Legion who are based in neighboring French Guiana, are training in Suriname with anti-tank, sniper, and mortar weapons. REUTERS/Ranu Abhelakh (SURINAME - Tags: MILITARY POLITICS)

Iraqi tribesman prepare their weapons during a weapon handover event to the Iraqi government in Basra, 420 km (260 miles) southeast of Baghdad December 11, 2010. Several Iraqi tribes handed over their weapons, acquired during the Saddam Hussein era, to the Iraqi government, as part of a security plan to improve the security situation in southern Iraq. Picture taken December 11, 2010. REUTERS/Atef Hassan (IRAQ - Tags: POLITICS)

Somali government soldiers take up position before firing on Hezbol Islam insurgents in the capital Mogadishu, March 23,2010. REUTERS/Mowliid Abdi (SOMALIA - Tags: CONFLICT)

Palestinian militants of the popular resistant movement take part in a training drill in front of the media in Jabalya in the northern Gaza Strip August 8, 2009. REUTERS/Suhaib Salem (GAZA POLITICS CONFLICT IMAGES OF THE DAY)

Hardline Somali Islamist militants take position during a stand-off between them and government forces north of Mogadishu July 21, 2009. Intense fighting is making it increasingly difficult to deliver aid to Somalia, where it is crucial to combat cholera outbreaks and maintain food supplies, U.N. agencies said on Tuesday. REUTERS/Omar Faruk (SOMALIA CONFLICT POLITICS)

Islamist insurgents fighting the Somali government patrol the streets at the Tarbunka area in Mogadishu, June 17, 2009. REUTERS/Mowlid Abdi (SOMALIA CONFLICT)

Hardline Islamist militants from Hizb Al-Islamiya patrol a deserted road in southern Mogadishu May 25, 2009. Somali President Sheikh Sharif Ahmed urged the international community on Monday to help his forces fend off hardline Islamist rebels who have hundreds of foreign fighters in their ranks. REUTERS/Feisal Omar (SOMALIA CONFLICT POLITICS IMAGES OF THE DAY)

Madagascar's military drive through the streets of Antananarivo at the end of a rally organised by opposition leader Andry Rajoelina March 16, 2009. Rajoelina called on Monday for the security forces to arrest President Marc Ravalomanana so he could take power in the Indian Ocean island.The opposition had earlier rejected an offer from Ravalomanana to hold a referendum to resolve the political crisis in which at least 135 people have been killed.
REUTERS/Siphiwe Sibeko (MADAGASCAR POLITICS CONFLICT MILITARY)

Former Taliban soldiers display their weapons during a ceremony in the western city of Herat March 10, 2009. Forty Taliban fighters surrendered to the government on Tuesday, according to local authorities. Afghanistan's Taliban on Tuesday turned down as illogical U.S. President Barack Obama's bid to reach out to moderate elements of the insurgents, saying the exit of foreign troops was the only solution for ending the war. REUTERS/Mohammad Shoib (AFGHANISTAN CONFLICT POLITICS)

A Congolese government soldier wearing a wig stands by the roadside near the front line north of Goma in eastern Congo, November 11, 2008. Weeks of violence have forced more than 250,000 people from homes or ramshackle camps where they had taken shelter, bringing to over 1 million the number of internal refugees from years of fighting in Democratic Republic of Congo's North Kivu province. REUTERS/Finbarr O'Reilly (DEMOCRATIC REPUBLIC OF CONGO)

A Cambodian soldier sits at the Cekakiri Svarak pagoda near the Preah Vihear temple, 245km (152 miles) north of Phnom Penh, July 22, 2008. Southeast Asian foreign ministers nudged Thailand and Cambodia on Tuesday to resolve a stand-off over an ancient temple on their border before bullets start flying. REUTERS/Chor Sokunthea (CAMBODIA)

Sunni Muslim gunmen walk away from the Bab Tibbaneh district area after clashes with Alawite gunmen close to the Shi'ite Hezbollah-led opposition in Tripoli July 10, 2008. Lebanese troops were deployed in volatile districts of the northern city of Tripoli on Thursday, ending 24 hours of sectarian clashes that killed four people and wounded 75. REUTERS/Omar Ibrahim (LEBANON)

An Iraqi military officer inspects weapons confiscated from gunmen, at an Iraqi army base in Basra, 550 km (342 miles) south of Baghdad, April 29, 2008. About 17 gunmen were arrested and weapon cache were found during raids in several houses by the U.S. and Iraqi soldiers in Basra during the past three days, an Iraqi army officer said. REUTERS/Atef Hassan (IRAQ)

An Afghan policeman carries his weapon in Patrol Base Wilson in the Zhari district after finishing basic police training April 24, 2008. REUTERS/Goran Tomasevic (AFGHANISTAN)

A policeman stands guard at the entrance of a burnt office of Moqtada al-Sadr after clashes in Diwaniya, 180 km (112 miles) south of Baghdad March 29, 2008. The office was burnt by members of tribal members after clashes erupted between Iraqi security forces with tribal members and Mehdi army in a village east of Diwaniya on Friday, police said a policeman and tribal member were killed during the clashes. REUTERS/Imad al-khozai (IRAQ)

A member of the Iraqi security forces kisses a copy of the Koran given to him by a member of Moqtada al-Sadr's office in Baghdad's Sadr City March 29, 2008. In Baghdad's Sadr City, Sadr's main stronghold, a group of Iraqi police and soldiers surrendered themselves and their weapons to the local Sadr office, a Reuters photographer said. The spokesman for Iraqi security forces in Baghdad, Major-General Qassim Moussawi, sought to play down the desertions, saying he had received reports of only 15 men surrendering. He said those who did so would be court-martialled. REUTERS/Kareem Raheem (IRAQ)

Mehdi Army fighters loyal to cleric Moqtada al-Sadr patrol a street in Basra, 550 km (340 miles) south of Baghdad, March 28, 2008. At least 120 "enemy" fighters have been killed in a four-day-old Iraqi military operation against Shi'ite militias in the southern oil hub of Basra, a senior Iraqi commander said on Friday. REUTERS/Atef Hassan (IRAQ)

Afghan men ride a motor vehicle in front of a house with Afghan policemen in a village west of Kandahar October 9, 2007. REUTERS/Goran Tomasevic (AFGHANISTAN)

Afghan National Army (ANA) troops run with their weapons while practicing mission manoeuvres at Ma'sum Ghar camp in Kandahar province, southern Afghanistan, July 10, 2007. Canadian troops from the Observer Mentoring and Liason Team (OMLT) are training the ANA as part of the NATO-led coalition's efforts to strengthen Afghanistan's national government and military. REUTERS/Finbarr O'Reilly (AFGHANISTAN)

Indian army soldiers display seized arms and ammunition in Srinagar February 14, 2006. Based on intelligence input, a search was launched by Rashtriya Rifles in Kupwara district bordering with Pakistan with the troops recovering a large cache of arms and ammunition from a well constructed underground hideout belong to separatist militants, an Indian army statement said. The cache included a missile of foreign origin, a solar rocket, one Pika gun, 12 anti-tank grenades and other arms and ammunitions, the statement added. REUTERS/Fayaz Kabli

Indian army officers stand behind a seized Pika gun in Srinagar February 14, 2006. Based on intelligence input, a search was launched by Rashtriya Rifles in Kupwara district bordering with Pakistan with the troops recovering a large cache of arms and ammunition from a well constructed underground hideout belong to separatist militants, an Indian army statement said. The cache included a missile of foreign origin, a solar rocket, one Pika gun, 12 anti-tank grenades and other arms and ammunitions, the statement added. REUTERS/Fayaz Kabli

An Indian army soldier displays a seized missile beside other arms and ammunition in Srinagar February 14, 2006. Based on intelligence input, a search was launched by Rashtriya Rifles in Kupwara district bordering with Pakistan with the troops recovering a large cache of arms and ammunition from a well constructed underground hideout belong to separatist militants, an Indian army statement said. The cache included a missile of foreign origin, a solar rocket, one Pika gun, 12 anti-tank grenades and other arms and ammunitions, the statement added. REUTERS/Fayaz Kabli

Indian army soldiers display seized ammunition at their headquarters in Srinagar February 14, 2006. Based on intelligence input, a search was launched by Rashtriya Rifles in Kupwara district bordering with Pakistan with the troops recovering a large cache of arms and ammunition from a well constructed underground hideout belong to separatist militants, an Indian army statement said. The cache included a missile of foreign origin, a solar rocket, one Pika gun, 12 anti-tank grenades and other arms and ammunitions, the statement added. REUTERS/Fayaz Kabli

Indian army soldiers display seized arms and ammunition in Srinagar February 14, 2006. Based on intelligence input, a search was launched by Rashtriya Rifles in Kupwara district bordering with Pakistan with the troops recovering a large cache of arms and ammunition from a well constructed underground hideout belong to separatist militants, an Indian army statement said. The cache included a missile of foreign origin, a solar rocket, one Pika gun, 12 anti-tank grenades and other arms and ammunitions, the statement added. REUTERS/Fayaz Kabli

An Indian army soldier displays a seized missile beside other arms and ammunition in Srinagar February 14, 2006. Based on intelligence input, a search was launched by Rashtriya Rifles in Kupwara district bordering with Pakistan with the troops recovering a large cache of arms and ammunition from a well constructed underground hideout belong to separatist militants, an Indian army statement said. The cache included a missile of foreign origin, a solar rocket, one Pika gun, 12 anti-tank grenades and other arms and ammunitions, the statement added. REUTERS/Fayaz Kabli

Indian army soldiers display seized ammunition at their headquarters in Srinagar February 14, 2006. Based on intelligence input, a search was launched by Rashtriya Rifles in Kupwara district bordering with Pakistan with the troops recovering a large cache of arms and ammunition from a well constructed underground hideout belong to separatist militants, an Indian army statement said. The cache included a missile of foreign origin, a solar rocket, one Pika gun, 12 anti-tank grenades and other arms and ammunitions, the statement added. REUTERS/Fayaz Kabli

Hamas supporters watch armed Hamas militants parade in central Gaza City September 18, 2005. Thousands of armed Hamas militants marched through Gaza City on Sunday, defying efforts to remove unauthorised weapons from the streets just days after the Palestinian president vowed not to tolerate armed chaos. About 10,000 members of the Islamic faction, cheered by tens of thousands, carried assault rifles, rockets and anti-tank missiles as they paraded in the group's largest armed show of force in the territory in years.]

Armed Hamas militants parade in central Gaza City September 18, 2005. Thousands of armed Hamas militants marched through Gaza City on Sunday, defying efforts to remove unauthorised weapons from the streets just days after the Palestinian president vowed not to tolerate armed chaos. About 10,000 members of the Islamic faction, cheered by tens of thousands, carried assault rifles, rockets and anti-tank missiles as they paraded in the group's largest Advertisement armed show of force in the territory in years. REUTERS/Yannis Behrakis yb/CN

Palestinian armed Hamas militants attend a parade in central Gaza City September 18, 2005. Thousands of armed Hamas militants marched through Gaza City on Sunday, defying efforts to remove unauthorised weapons from the streets just days after the Palestinian president vowed not to tolerate armed chaos. About 10,000 members of the Islamic faction, cheered by tens of thousands, carried assault rifles, rockets and anti-tank missiles as they paraded in the group's largest armed show of force in the territory in years. REUTERS/Yannis Behrakis yb/AH

Palestinian armed Hamas militants attend a parade in central Gaza City September 18, 2005. Thousands of armed Hamas militants marched through Gaza City on Sunday, defying efforts to remove unauthorised weapons from the streets just days after the Palestinian president vowed not to tolerate armed chaos. About 10,000 members of the Islamic faction, cheered by tens of thousands, carried assault rifles, rockets and anti-tank missiles as they paraded in the group's largest armed show of force in the territory in years. REUTERS/Yannis Behrakis yb/AH

Hamas supporters watch armed Hamas militants parade in central Gaza City September 18, 2005. Thousands of armed Hamas militants marched through Gaza City on Sunday, defying efforts to remove unauthorised weapons from the streets just days after the Palestinian president vowed not to tolerate armed chaos. About 10,000 members of the Islamic faction, cheered by tens of thousands, carried assault rifles, rockets and anti-tank missiles as they paraded in the group's largest armed show of force in the territory in years. REUTERS/Yannis Behrakis yb/SA

Hamas supporters watch armed Hamas militants parade in central Gaza City September 18, 2005. Thousands of armed Hamas militants marched through Gaza City on Sunday, defying efforts to remove unauthorised weapons from the streets just days after the Palestinian president vowed not to tolerate armed chaos. About 10,000 members of the Islamic faction, cheered by tens of thousands, carried assault rifles, rockets and anti-tank missiles as they paraded in the group's largest armed show of force in the territory in years. REUTERS/Yannis Behrakis yb/SA

Mikhail Kalashnikov, developer of the popular Russian AK-47 assault rifle looks at the 'Corsar' light portable anti tank system during the second day of 7th International Defence Exhibition & Conference, IDEX, in Abu Dhabi February 14, 2005. More than 900 companies from around the world are displaying products at IDEX, the largest arms bazaar in the Middle East. REUTERS/Anwar Mirza AM/AA

Brazilian soldiers stand guard just inside the entrance of the Brazilian Air Force building in Rio de Janeiro, May 3, 2004. Armed men stole a van with assault rifles from a Brazilian Air Force armory on Monday in Rio de Janeiro and police found anti-tank rockets in a slum; fresh signs that the city's drug gangs are expanding their arsenal and firepower. The theft occurred two weeks after police discovered an arsenal in another shantytown in the crime-ridden city that surprised even hard-boiled Rio violence experts as it contained eight Belgium-made land mines and more than 100 grenades. REUTERS/Sergio Moraes SM/GN

Brazilian soldiers stand guard at the entrance of the Brazilian Air Force building in Rio de Janeiro, May 3, 2004. Armed men stole a van with assault rifles from a Brazilian Air Force armory on Monday in Rio de Janeiro and police found anti-tank rockets in a slum; fresh signs that the city's drug gangs are expanding their arsenal and firepower. The theft occurred two weeks after police discovered an arsenal in another shantytown in the crime-ridden city that surprised even hard-boiled Rio violence experts as it contained eight Belgium-made land mines and more than 100 grenades. REUTERS/Sergio Moraes SM/GN

A soldier stands guard at the entrance of the Brazilian Air Force building in Rio de Janeiro, May 3, 2004. Armed men stole a van with assault rifles from a Brazilian Air Force armory on Monday in Rio de Janeiro and police found anti-tank rockets in a slum; fresh signs that the city's drug gangs are expanding their arsenal and firepower. The theft occurred two weeks after police discovered an arsenal in another shantytown in the crime-ridden city that surprised even hard-boiled Rio violence experts as it contained eight Belgium-made land mines and more than 100 grenades. REUTERS/Sergio Moraes SM/GN

Masked Hamas gunmen march with anti tanks rifles during a Hamas rally on the last day of mouring for former Hamas leader Sheikh Ahmed Yassin in Gaza March 24,2004. Palestinian militant group Hamas said it had the right to target Prime Minister Ariel Sharon to avenge Israel's killing of its leader but reassured the United States it was not in the firing line. REUTERS/Suhaib Salem SJS/WS

Lance Corporal Melvin Dobberteen of Colon, Michigan, with the 15th Marine Expeditionary Unit (MEU) Fox Company 'Raiders' lifts Iraqi anti aircraft ammunition found in a Baath Party headquarters in the city of Nassiriya in southern Iraq on April 8, 2003. U.S. forces tightened their hold on central Baghdad on Tuesday, advancing street by street and blitzing targets with planes and tanks as Iraqi defenders fought an unequal battle with anti-tank weapons and assault rifles.