An internet user poses in front of a computer screen showing a twitter website post of a digitally altered image of Burundi's President Pierre Nkurunziza, in Kampala on June 19, 2016. A quiet protest movement is spreading in Burundi's schools where hundreds of students have been suspended in recent weeks for defacing pictures of President Pierre Nkurunziza in textbooks. Scribbling on the presidential portraits contained in government-issue study guides is seen as an act of silent resistance against a regime that clings to power despite more than a year of deadly protests. / AFP PHOTO / STRINGERSTRINGER/AFP/Getty Images

An internet user poses in front of a computer screen showing a twitter website post of a digitally altered image of Burundi's President Pierre Nkurunziza, in Kampala on June 19, 2016. A quiet protest movement is spreading in Burundi's schools where hundreds of students have been suspended in recent weeks for defacing pictures of President Pierre Nkurunziza in textbooks. Scribbling on the presidential portraits contained in government-issue study guides is seen as an act of silent resistance against a regime that clings to power despite more than a year of deadly protests. / AFP PHOTO / STRINGERSTRINGER/AFP/Getty Images

An internet user poses in front of a computer screen showing a twitter website post of a digitally altered image of Burundi's President Pierre Nkurunziza, in Kampala on June 19, 2016. A quiet protest movement is spreading in Burundi's schools where hundreds of students have been suspended in recent weeks for defacing pictures of President Pierre Nkurunziza in textbooks. Scribbling on the presidential portraits contained in government-issue study guides is seen as an act of silent resistance against a regime that clings to power despite more than a year of deadly protests. / AFP PHOTO / STRINGERSTRINGER/AFP/Getty Images

Jacques Moreau (topL), former research director at the CNRS (National Center for Scientific Research), and four suburban youths and scientific apprentices Youssef (top R) and (from bottom R) Elisa, Nina, Arthur pose on April 27, 2016 in Les Salces, Lozere department, during a preparatory walk in L'Aubrac. Jacques Moreau and the four scientific apprentices will march from July 19 to August 19, 2016 through the Inglefield Land in the Arctic, to observe, collect samples and list wildlife under the guidance of scientists as part of the Association Science Ouverte project. / AFP PHOTO / Association Science Ouverte / Jacques MOREAU / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / ASSOCIATION SCIENCE OUVERTE / JACQUES MOREAU" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTSJACQUES MOREAU/AFP/Getty Images

(FILES) This file photo taken on August 18, 2014 shows WikiLeaks founder Julian Assange gesturing during a press conference inside the Ecuadorian Embassy in London on August 18, 2014 where Assange has been holed up for two years. WikiLeaks founder Julian Assange started his fifth year camped out in the Ecuadoran embassy in London on June 19, 2016, an occasion his supporters were to mark with events celebrating whistleblowers. The 44-year-old is wanted for questioning over a 2010 rape allegation in Sweden but has been inside Ecuador's UK mission for four full years in a bid to avoid extradition. The Australian former computer hacker fears that from Sweden he could be extradited to the United States over WikiLeaks' release of 500,000 secret military files, and could face a long prison sentence there. / AFP PHOTO / POOL / JOHN STILLWELLJOHN STILLWELL/AFP/Getty Images

(FILES) This file photo taken on February 05, 2016 shows WikiLeaks founder Julian Assange looking out of the balcony window of the Ecuadorian embassy in central London on February 5, 2016 before addressing the media from the balcony. WikiLeaks founder Julian Assange started his fifth year camped out in the Ecuadoran embassy in London on June 19, 2016, an occasion his supporters were to mark with events celebrating whistleblowers. The 44-year-old is wanted for questioning over a 2010 rape allegation in Sweden but has been inside Ecuador's UK mission for four full years in a bid to avoid extradition. The Australian former computer hacker fears that from Sweden he could be extradited to the United States over WikiLeaks' release of 500,000 secret military files, and could face a long prison sentence there. / AFP PHOTO / NIKLAS HALLE'NNIKLAS HALLE'N/AFP/Getty Images

(FILES) This file photo taken on February 05, 2016 shows WikiLeaks founder Julian Assange coming out on the balcony of the Ecuadorian embassy to address the media in central London on February 5, 2016. WikiLeaks founder Julian Assange started his fifth year camped out in the Ecuadoran embassy in London on June 19, 2016, an occasion his supporters were to mark with events celebrating whistleblowers. The 44-year-old is wanted for questioning over a 2010 rape allegation in Sweden but has been inside Ecuador's UK mission for four full years in a bid to avoid extradition. The Australian former computer hacker fears that from Sweden he could be extradited to the United States over WikiLeaks' release of 500,000 secret military files, and could face a long prison sentence there. / AFP PHOTO / BEN STANSALLBEN STANSALL/AFP/Getty Images

(FILES) This file photo taken on December 20, 2012 shows Wikileaks founder Julian Assange gesturing as he addresses members of the media and supporters from the window of the Ecuadorian embassy in Knightsbridge, west London on December 20, 2012. WikiLeaks founder Julian Assange started his fifth year camped out in the Ecuadoran embassy in London on June 19, 2016, an occasion his supporters were to mark with events celebrating whistleblowers. The 44-year-old is wanted for questioning over a 2010 rape allegation in Sweden but has been inside Ecuador's UK mission for four full years in a bid to avoid extradition. The Australian former computer hacker fears that from Sweden he could be extradited to the United States over WikiLeaks' release of 500,000 secret military files, and could face a long prison sentence there. / AFP PHOTO / LEON NEALLEON NEAL/AFP/Getty Images