Greek Prime Minister Alexis Tsipras speaks during an interview to the radio station 'Sto Kokkino', in Athens, Greece, on 29 July 2015.

P. M. Alexis Tsipras, struggling to contain a revolt in his Syriza party, said his government would not implement reform measures beyond those agreed with lenders.

Nigerian president Muhammadu Buhari in Johannesburg, South Africa, 6/14/15. MUJAHID SAFODIEN/AFP/Getty Images

He dissolved the state oil company’s board, launched an investigation, and promised reforms.

Brazil’s President Dilma Rousseff in Brasilia, Brazil, on July 17, 2015. EVARISTO SA/AFP/Getty Images

Brazil's nosediving economy takes Rousseff's approval ratings with it, and a drought doesn't help.

Hong Kong pro-democracy lawmakers leave after a vote at the city's legislature in Hong Kong on June 18, 2015.

Legislators rejected a controversial election reform package after a session of fiery debate.

Finland’s Niinisto (L) shakes hands with Russia’s Putin (R), June 16, 2015. ALEXANDER NEMENOV/AFP/Getty Images

A row had erupted after Finland refused entry to Russian politicians for an OSCE conference.

Armenian police use water cannons on protesters in Yerevan, Armenia, June 23, 2015. Anadolu Agency/Getty Images

An electricity price increase sparks protests that could turn against the Russian-allied government.

Boy Scouts march during the 2015 San Francisco Pride Parade on June 28, 2015 in San Francisco, California.

Group takes major step toward dismantling divisive policy.