(FILES) Picture taken on September 24, 2009 shows Belarussian soldiers near an S-300 surface-to-air missile complex using during the joint Russian-Belarussian military exercises "West-2009" some 230km southwest of Minsk near the village of Volka. Russia has arrested a Chinese national who was trying to secure secret documents about the country's S-300 missile systems, the FSB federal security service said on October 2011. The man, identified in Russian as Tung Shen-Yun, worked as an official translator and was originally arrested on October 28, 2010, Russian news agencies quoted an FSB statement as saying. AFP PHOTO / VIKTOR DRACHEV (Photo credit should read VIKTOR DRACHEV/AFP/Getty Images)
Armenian servicemen of the self-defense army of Nagorno-Karabakh fire an artillery shell towards Azeri forces from their positions in the town of Martakert in Armenian-seized Azerbaijani region of Nagorny Karabakh on April 3, 2016.
Clashes between Azerbaijani and Armenian forces rumbled on April 3, despite Baku announcing a ceasefire after the worst outbreak of violence in decades over the disputed Nagorny Karabakh region sparked international pressure to stop fighting. / AFP / PHOTOLURE / Vahram Baghdasaryan (Photo credit should read VAHRAM BAGHDASARYAN/AFP/Getty Images)
BERLIN, GERMANY - AUGUST 03: A sign makes passersby aware of a facial recognition technology test at Berlin Suedkreuz station on August 3, 2017 in Berlin, Germany. The technology is claimed could track terror suspects and help prevent future attacks. (Photo by Steffi Loos/Getty Images)
US Secretary of Homeland Security John Kelly speaks about immigration enforcement legislation during a press conference on Capitol Hill in Washington, DC, June 29, 2017.
US President Donald Trump's order to block arrivals from six mainly Muslim countries takes partial effect Thursday after he won a Supreme Court victory over rights groups. / AFP PHOTO / SAUL LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)
Incumbent Rwandan President Paul Kagame dances onstage after addresses supporters at the closing rally of the presidential campaign in Kigali on August 2, 2017.
Rwandans go the polls on August 4, 2017 in a presidential election in which strongman Paul Kagame is widely expected to cruise to a third term in office. / AFP PHOTO / MARCO LONGARI (Photo credit should read MARCO LONGARI/AFP/Getty Images)
TOPSHOT - Anti-government demonstrators attack the administration headquarters of the Supreme Court of Justice as part of protests against President Nicolas Maduro in Caracas, on June 12, 2017.
With Venezuelans suffering from high inflation, food shortages and soaring crime rates, plus a deepening corruption scandal, the Venezuelan opposition has mounted near-daily anti-government protests since April 1. The protests have left 66 dead and more than a thousand injured, according to prosecutors.
/ AFP PHOTO / Federico PARRA (Photo credit should read FEDERICO PARRA/AFP/Getty Images)
US President Donald Trump (L) and French President Emmanuel Macron (R) shake hand at the end of a press conference following meetings at the Elysee Palace in Paris, on July 13, 2017, during the US president's 24-hour trip that coincides with France's national day and the 100th anniversary of US involvement in World War I.
Donald Trump arrived in Paris for a presidential visit filled with Bastille Day pomp and which the White House hopes will offer respite from rolling scandal backing home.
/ AFP PHOTO / ALAIN JOCARD (Photo credit should read ALAIN JOCARD/AFP/Getty Images)
QIONGHAI, CHINA - APRIL 08: (CHINA OUT) Founder of Soros Fund Management LLC George Soros attends the Boao Forum for Asia on April 8, 2013 in Qionghai, Hainan Province of China. State and government leaders from Asia and other regions have been invited to attend three-days of economic meetings for the annual Boao Forum for Asia in Boao, a coastal town in south China's Hainan Province. (Photo by VCG/VCG via Getty Images)
The parents of 43 missing students from Ayotzinapa teachers school hold their portraits and torches during a march 18 months after their disappearance in Mexico City on April 26, 2016. / AFP / YURI CORTEZ (Photo credit should read YURI CORTEZ/AFP/Getty Images)
