The plane carrying the last of Canada's troops in Afghanistan is escorted through the air by fighter jets, after the last Canadian troops from Afghanistan returned to Ottawa International Airport on March 18, 2014 in Ottawa, Ontario. Eighty-four armed forces members were welcomed home marking the end of Canada's participation in the Afghanistan war, a mission that spanned 12 years. AFP PHOTO/ Cole Burston (Photo credit should read Cole Burston/AFP/Getty Images)
ISLAMABAD, Dec. 9, 2015 -- Afghan President Ashraf Ghani, Pakistani Prime Minister Nawaz Sharif, Chinese Foreign Minister Wang Yi, and U.S. Deputy Secretary of State Antony Blinken attend a 2+2 meeting on the sidelines of the ongoing fifth foreign ministers' conference of the Istanbul Process on Afghanistan in Islamabad, capital of Pakistan, on Dec. 9, 2015. Chinese Foreign Minister Wang Yi said here Wednesday that China is willing to see the United States play a "positive and constructive" role in Afghanistan's peace process. (Xinhua via Getty Images)
Heavy traffic is seen during a smoggy day in New Delhi on November 30, 2015. Some 150 leaders including US President Barack Obama, China's Xi Jinping, India's Narendra Modi and Russian President Vladimir Putin will attend the start of the Paris conference on climate change, which starts on November 30, tasked with reaching the first truly universal climate pact. AFP PHOTO / Money SHARMA / AFP / MONEY SHARMA (Photo credit should read MONEY SHARMA/AFP/Getty Images)
HERAT, AFGHANISTAN - OCTOBER 26: Afghan soldiers inspect an area after the Afghan security forces clashed with the Taliban militants in the Helmand Province, Afghanistan on October 26, 2015. At least 230 Taliban Militants and 27 Afghan soldiers killed during the ongoing clashes for 6 days. (Photo by Abdul Hadi Roshan /Anadolu Agency/Getty Images)
In this photograph taken on January 31, 2013, miners haul baskets full of coal as they load a truck with coal at a road side coal depot near Rymbai village in the Indian northeastern state of Meghalaya. Thousands of private mines employ slim men and boys that will fit in thin holes branching out from deep shafts dug out from the ground in the East Jaintia Hills in Northeastern Indian state of Meghalaya. This state is the only state in India where coal mining is done privately by mine owners, who use cheap labour to supply the demand for this energy resource. Accidents and quiet burials are commonplace, with years of uncontrolled drilling making the rat-hole mines unstable and liable to collapse at any moment. After decades of unregulated mining, the state is due to enforce its first-ever mining policy later this year. AFP PHOTO/ Roberto Schmidt (Photo credit should read ROBERTO SCHMIDT/AFP/Getty Images)
