Brett, a Westerner who has joined the Iraqi Christian militia Dwekh Nawsha to fight against Islamic State militants, poses at the office of the Assyrian political party in Dohuk, northern Iraq February 13, 2015. Thousands of foreigners have flocked to Iraq and Syria in the past two years, mostly to join Islamic State, but a handful of idealistic Westerners are enlisting as well, citing frustration their governments are not doing more to combat the ultra-radical Islamists or prevent the suffering of innocents. The militia they joined is called Dwekh Nawsha – meaning self-sacrifice in the ancient Aramaic language spoken by Christ and still used by Assyrian Christians, who consider themselves the indigenous people of Iraq. (Photo by Ari Jalal/Reuters)

Trucks are seen on a road in the Grasberg copper and gold mine operated by an Indonesian subsidiary of Freeport-McMoRan Inc, near Timika, Papua province, Indonesia February 15, 2015 in this photo taken by Antara Foto. (Photo by M. Agung Rajasa/Reuters/Antara Foto)

Smoke rises from burning tyres as Palestinians shout during a protest calling for reconstruction of their houses that witnesses said were destroyed by Israeli shelling during a 50-day war last summer, outside a United Nations food distribution center in Rafah in the southern Gaza Strip February 16, 2015. (Photo by Ibraheem Abu Mustafa/Reuters)

Ziripot, a traditional figure stuffed with straw, is helped up during Carnival celebrations in the Navarran village of Lantz, on February 16, 2015. (Photo by Vincent West/Reuters)

Revelers dressed as the traditional carnival characters “Zaku Zaharrak”, or old sack in Basque language, walk during the carnival parade of the small village of Lesaka, Spain, Sunday, February 15, 2015. After the sun set and covering their faces with white handkerchiefs, stuffed into sacks full of straw, and holding a stick with an inflated animal’s bladder used to hit people, the Zaku Zaharrak characters parade for hours trough the village dancing and singing while a band plays music. (Photo by Daniel Ochoa de Olza/AP Photo)

A drag queen performs on stage before the Drag Race in central Jerusalem, February 16, 2015. The Jerusalem LGBT (lesbian, gay bisexual and transgender) community organized a Drag Race in which competitors raced wearing high heels. (Photo by Ammar Awad/Reuters)

North Korean leader Kim Jong Un (front) visits the Kumsusan Palace of the Sun at 00:00 on Monday, the Day of the Shining Star, in this undated photo released by North Korea's Korean Central News Agency (KCNA) in Pyongyang on February 16, 2015. (Photo by Reuters/KCNA)

Bolivian President Evo Morales (C) dances as he takes part in Carnival celebrations in his hometown of Orinoca, in Oruro Department, February 16, 2015. (Photo by Reuters/ABI/Bolivian Presidency)

Maria Elena Morejon, 64, prepares tobacco leaves for drying at a curing barn in Cuba's western province of Pinar del Rio, February 16, 2015. Cuba will host the 17th Habanos Festival, the world's premier cigar event, from February 23 to 27. (Photo by Alexandre Meneghini/Reuters)

Tobacco leaves hang inside a curing barn at a farm in Cuba's western province of Pinar del Rio, February 16, 2015. (Photo by Alexandre Meneghini/Reuters)

People run following a bombing in Lahore, Pakistan, Tuesday, February 17, 2015. An apparent suicide bombing killed many people outside a police complex in eastern Pakistan on Tuesday, officials said, in a rare attack on the relatively peaceful city of Lahore. (Photo by K. M. Chaudary/AP Photo)

Policemen and residents move a dead body from the site of an explosion outside the police headquarters, in Lahore February 17, 2015. At least seven people died on Tuesday in a large explosion and gunfire at the regional police headquarters in Pakistan's eastern city of Lahore, police said. (Photo by Imran Sheikh/Reuters)

Residents carry an injured man from the site of an explosion outside the police headquarters, in Lahore February 17, 2015. (Photo by Imran Sheikh/Reuters)

Pakistani police officers and volunteers rush an injured man to a hospital after a bombing in Lahore, Pakistan, Tuesday, February 17, 2015. (Photo by K. M. Chaudary/AP Photo)

Police detain an activist of Ukrainian womens' rights group FEMEN during a protest against a visit of Russian President Vladimir Putin in Budapest February 17, 2015. (Photo by Laszlo Balogh/Reuters)

The ball is pulled from the hug during the annual Shrovetide football match in Ashbourne, central England February 17, 2015. The aim of the teams, the Up'ards and the Down'ards, is to score by tapping the ball three times on stone goal plinths three miles apart on the banks of the River Henmore. The game dates back to the 17th century. (Photo by Darren Staples/Reuters)

A woman sells chicken at the Oriental Market in Managua, Nicaragua February 17, 2015. (Photo by Oswaldo Rivas/Reuters)

Libyans celebrate the fourth anniversary of the revolution against Muammar Gaddafi at a street in Tripoli February 17, 2015. (Photo by Ismail Zitouny/Reuters)

People peep through a hole in the wall while trying to catch a glimpse of the dead bodies of people who were killed when a carnival float hit power lines, at the morgue in Port-au-Prince February 17, 2015. At least 18 people were killed and 60 injured early on Tuesday when a carnival float hit power lines in Haiti's capital Port-au-Prince on the second day of the annual festival, officials said. The float caught fire after it hit a high-voltage overhead power cable, witnesses said. Video of the incident appeared to show the electric cable catch the head of a singer from hip-hop band Barikad Crew near the presidential stand packed with spectators. Seven people were reported dead on the float, and others were killed in the ensuing panic. The singer, known as Fantom, was among the injured, according to a friend. (Photo by Andres Martinez Casares/Reuters)

A reveler makes his way through the French Quarter on Mardi Gras in New Orleans, Louisiana February 17, 2015. (Photo by Jonathan Bachman/Reuters)

Ballerinas from The Australian Ballet perform on a floating platform, during a promotional event in front of the Sydney Opera House, February 18, 2015. The event was to promote the Australian Ballet's upcoming performance of Swan Lake opening on February 20. (Photo by David Gray/Reuters)

Ballerinas from The Australian Ballet perform on a floating platform, during a promotional event in front of the Sydney Opera House, February 18, 2015. (Photo by David Gray/Reuters)

Ballerinas from The Australian Ballet perform on a floating platform during a promotional event on Sydney Harbour, February 18, 2015. (Photo by David Gray/Reuters)

A masquerader from Fantasy Carnival's band “Blockbuster” parades on stage during the band's presentation on stage at Queen's Park Savannah, Port-of-Spain on February 17, 2015. (Photo by Andrea De Silva/Reuters)

A masquerader from Hart's band “Dominion Of The Sun” prepares to go on stage during the band's presentation on stage at Queen's Park Savannah, Port-of-Spain February 17, 2015. (Photo by Andrea De Silva/Reuters)

Miss Universe 1998 Wendy Fitzwilliam parades on stage with Hart's band “Dominion Of The Sun” during the band's presentation at Queen's Park Savannah, Port-of-Spain on February 17, 2015. (Photo by Andrea De Silva/Reuters)

Trinidadian model Soowan Bramble parades on stage with Hart's band “Dominion Of The Sun” during the band's presentation at Queen's Park Savannah, Port-of-Spain on February 17, 2015. (Photo by Andrea De Silva/Reuters)

Revellers ahead of the last day of the annual Carnival parade in Panama City, February 17, 2015. (Photo by Carlos Jasso/Reuters)

Workers loading palm oil fruits into containers on their way into processing plants at a palm oil factory in Malingping, Indonesia's Banten province in this August 9, 2010 file photo. A plan to triple Indonesia's biodiesel subsidy will provide some relief to Southeast Asia's beleaguered renewable fuel industry, but it is unlikely to boost demand significantly given the slump in the price of rival petroleum products. That leaves benchmark palm oil futures vulnerable to a reversal after rallying 7 percent this month partly on the hope the Indonesian subsidy would boost use of the tropical oil for blending into biofuels. (Photo by Reuters/Beawiharta)

A rebel fighter sits atop a tank at the front line against forces loyal to Syria's President Bashar al-Assad in Ratian village, north of Aleppo February 17, 2015. Battles in and around the Syrian city of Aleppo have killed at least 70 pro-government fighters and more than 80 insurgents after the army started an offensive there, a monitoring group said on Wednesday. The Syrian army, backed by allied militia, had captured areas north of Aleppo on Tuesday in what the Syrian Observatory for Human Rights said was an attempt to cut off insurgent supply lines to Syria's second city. (Photo by Ammar Abdullah/Reuters)

A rebel fighter of al-Jabha al-Shamiya (the Shamiya Front) covered with mud carries his weapon as he sits near the front line with Bashkuwi village, north of Aleppo February 19, 2015. Battles in and around the Syrian city of Aleppo have killed at least 70 pro-government fighters and more than 80 insurgents after the army launched an offensive there, a monitoring group said on Wednesday. (Photo by Rami Zayat/Reuters)

Rebel fighters of al-Jabha al-Shamiya (the Shamiya Front) sit in an armoured vehicle along a main road between Raitan and Bashkuwi villages, north of Aleppo February 19, 2015. (Photo by Rami Zayat/Reuters)

Ancient gold coins are displayed in Caesarea, north of Tel Aviv along the Mediterranean coast February 18, 2015. Almost 2,000 gold coins, believed to be from the 11th century, were found in recent weeks on the seabed by amateur divers who then alerted the Israel Antiquities Authority's Marine Archaeology Unit. (Photo by Nir Elias/Reuters)

An ancient gold coin is displayed in Caesarea, north of Tel Aviv along the Mediterranean coast February 18, 2015. (Photo by Nir Elias/Reuters)

Maida Drndic of Serbia skis during women's cross-country 5 km free sprint qualification at the Nordic World Ski Championships in Falun February 18, 2015. (Photo by Kai Pfaffenbach/Reuters)

Members of the Breitling Wingwalkers perform during the inauguration ceremony of the “Aero India 2015” air show at Yelahanka air base in the southern Indian city of Bengaluru February 18, 2015. India's prime minister Narendra Modi has asked global defence contractors to transfer more technology to the country as part of the lucrative deals that they win to modernise its armed forces. (Photo by Abhishek N. Chinnappa/Reuters)

Indian Air Force (IAF) advanced light helicopters display team “Sarang” performs during the “Aero India 2015” air show at Yelahanka air base in Bengaluru February 19, 2015. (Photo by Abhishek N. Chinnappa/Reuters)

Russian aerobatic team Yakovlev fly in a formation on the second day of “Aero India 2015” at Yelahanka air base in Bangalore, India, Thursday, February 19, 2015. Aviation companies from around the world are participating in the five-day event which runs through Feb. 22. (Photo by Aijaz Rahi/AP Photo)

Catwalk or Skycats of the Scandinavian Aerobatic Team leave a trail of Indian tri-colour smoke as they perform aerobatics during the second day of the “Aero India 2015” at the Yelahanka Airforce Station in Bangalore on February 19, 2015. (Photo by Manjunath Kiran/AFP Photo)