Incumbent Ukrainian President Petro Poroshenko, left, and his challenger for the presidency, Volodymyr Zelensky, debate at the Olimpiyskiy stadium in Kiev on April 19.
Supporters of President Uhuru Kenyatta celebrate on Nov. 20, in Nairobi after Kenya's Supreme Court dismissed two petitions to overturn the country's Oct. 26 presidential election re-run, validating the poll victory of Kenyatta.(Simon Maina/AFP/Getty Images)
German Chancellor Angela Merkel takes her oath of office for her third term as chancellor at the Bundestag during ceremonies in which the new German government was sworn in on December 17, 2013 in Berlin, Germany. The new government is a coalition between the German Christian Democrats (CDU), the Bavarian Christian Democrats (CSU) and German Social Democrats (SPD) following federal elections held in September.
TOPSHOT - US President Donald Trump waves as he boards Air Force One prior to departing from Andrews Air Force Base in Maryland, April 18, 2017, as he travels to Wisconsin. / AFP PHOTO / SAUL LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)
Indian supporters of the Bharatiya Janata Party (BJP) celebrate outside the party office as state assembly votes are counted in Lucknow on March 11, 2017.
Prime Minister Narendra Modi's Bharatiya Janata Party claimed election victory in four Indian states, calling it a "historic mandate" that would take the country's politics in a new direction. / AFP PHOTO / SANJAY KANOJIA (Photo credit should read SANJAY KANOJIA/AFP/Getty Images)
Japanese Prime Minister Shinzo Abe (R) attends a press conference after a meeting with U.S president elected Donald Trump on November 17, 2016 in New York / AFP / KENA BETANCUR (Photo credit should read KENA BETANCUR/AFP/Getty Images)
TOPSHOT - A copy of the local Chinese magazine Global People with a cover story that translates to "Why did Trump win" is seen with a front cover portrait of US president-elect Donald Trump at a news stand in Shanghai on November 14, 2016.
Chinese President Xi Jinping and US president-elect Donald Trump agreed November 14 to meet "at an early date" to discuss the relationship between their two powers, Chinese state broadcaster CCTV said. / AFP / JOHANNES EISELE (Photo credit should read JOHANNES EISELE/AFP/Getty Images)
KNUTSFORD, UNITED KINGDOM - MARCH 17: In this photo illustration, the European Union and the Union flag sit together on bunting on March 17, 2016 in Knutsford, United Kingdom. The United Kingdom will hold a referendum on June 23, 2016 to decide whether or not to remain a member of the European Union (EU), an economic and political partnership involving 28 European countries which allows members to trade together in a single market and free movement across its borders for citizens. (Photo by illustration by Christopher Furlong/Getty Images)
