Philippine President Rodrigo Duterte (C) salutes as he reviews the honour guard as he attends the 250th Presidential Airlift Wing Command anniversary celebrations at Villamor air base in Manila on September 13, 2016.
The Philippines assured the United States September 13 it will honour its obligations as a military ally following volleys of profane tirades by unpredictable President Rodrigo Duterte. / AFP / TED ALJIBE (Photo credit should read TED ALJIBE/AFP/Getty Images)
Chinese President Xi Jinping stands by national flags at the Schloss Bellevue presidential residency in Berlin on March 28, 2014. Chinese President Xi Jinping begins a landmark visit to fellow export powerhouse Germany Friday, the third leg of his European tour, expected to cement flourishing trade ties and focus on the Crimea crisis.
AFP PHOTO / JOHANNES EISELE (Photo credit should read JOHANNES EISELE/AFP/Getty Images)
CHANGCHUN, CHINA - SEPTEMBER 25: (CHINA OUT) Students dressed in ancient clothes stand in front of the statue of Confucius (551-479 BC), during a ceremony to worship the Chinese philosopher and educator at the Changchun Confucian Temple on September 25, 2005 in Changchun of Jilin Province, China. Various of ceremonies and celebrations are being held in China to mark the upcoming 2,556th anniversary of Confucius's birthday on September 28. During the day, the "2005 Global Joint Confucius Memorial Ceremony" will be held in different Confucian Temples around China and the world. (Photo by China Photos/Getty Images)
BEIJING, CHINA - DECEMBER 28: (CHINA OUT) A visitor takes photos near the National Center for the Performing Arts on December 28, 2015 in Beijing, China. Beijing welcame sunny days after several-days' heavy smog last week. (Photo by ChinaFotoPress/ChinaFotoPress via Getty Images)
A general view shows the third session of the 12th National People's Congress at the Great Hall of the People in Beijing on March 8, 2015. China's Communist Party-controlled legislature, the National People's Congress (NPC), gathers in the capital for the annual show of political theater, with the "rule of law" high on the agenda. AFP PHOTO / WANG ZHAO (Photo credit should read WANG ZHAO/AFP/Getty Images)
Chinese President Xi Jinping arrives for his welcoming banquet on the start of his visit to the United States, at the Westin Hotel in Seattle, Washington on September 22, 2015. President Xi will makes a high-profile state visit to the White House this week, but he stops first in Washington state on the west coast to shore up support among skittish allies, especially big business. The Seattle talks will be heavily focused on business, trade and economics. AFP PHOTO/MARK RALSTON (Photo credit should read MARK RALSTON/AFP/Getty Images)
A policeman stands guard at the Shanghai Intermediate Court on August 8, 2014. Peter Humphrey, a British investigator once hired by scandal-hit pharmaceutical giant GSK in China, did not dispute accusations that he had breached privacy laws as he went on trial on August 8, the court said. Peter Humphrey and his US wife Yu Yingzeng were hired to investigate the source of a lurid sex tape of the China boss of GlaxoSmithKline (GSK), shortly before the British firm became embroiled in bribery allegations. AFP PHOTO / JOHANNES EISELE (Photo credit should read JOHANNES EISELE/AFP/Getty Images)
