Venezuelan opposition leader Leopoldo Lopez (C) arrives at the Director of Public Prosecutions' office in Caracas on February 28, 2013 to be questioned about presumed irregularities concerning two donations made in 1985 by Petroleos de Venezuelas (PDVSA) state-owned oil company.

Leopoldo Lopez is accused of inciting violence during anti-government demonstrations.

A Tuareg man holds the flag of the National Movement for the Liberation of Azawad (MLNA) during a demonstration in support of the MLNA on July 28, 2013 in Kidal, northern Mali.  AFP PHOTO / KENZO TRIBOUILLARD

The Algeria-mediated talks are aimed to calm long-standing tensions with Tuareg rebels in north.

Colombian President Juan Manuel Santos listens as U.S. President Barack Obama (R) speaks in the Oval Office of the White House December 3, 2013 in Washington, D.C.

President Juan Manuel Santos called on lawmakers to back efforts to strike peace deal with Marxist rebels.

Former Thai Prime Minister Yingluck Shinawatra spoke to the media on Friday for the first time since her government was ousted in a May coup, rejecting charges she was negligent in stemming corruption.

Yingluck Shinawatra on Friday spoke to the media for the first time since her government was ousted in May.

Marina Litvinenko answers questions from the media during a press conference on July 22, 2014 in London, England.

British authorities denied the investigation was linked to the Ukraine crisis.

A soldier with the Kurdish peshmerga pauses at an outpost on the edges of the contested city of Kirkuk on July 3, 2014 in Kirkuk, Iraq. On Thursday the president of Iraq's autonomous Kurdish region, Massoud Barzani, asked Members of Parliament to start making plans for an independence referendum. American leaders and Iraqi Prime Minister Nouri al-Maliki's have urged the Kurds to back away from seeking independence.

Selection of moderate Sunni Islamist may be first step towards the creation of a coalition government. 

U.S. President Barack Obama speaks on the Ukraine situation outside the Oval Office of the White House July 21, 2014 in Washington, DC.

Obama voiced serious concerns about the growing number of civilian casualties resulting from conflict.