Leading Colombian government negotiator Humberto de la Calle calls for a faster pace to peace negotiations with Farc rebels in Havana.

Rebels fighting the government in the Central African Republic have signed a formal ceasefire and agreed to form a unity government following talks in Gabon.

The president of the Massachussetts Institute of Technology asks for an internal investigation into its role in Aaron Swartz's prosecution.

Russia's new defence minister sacks the chief medical officer of the armed forces after five soldiers die of pneumonia.

The chief minister of the Pakistani province of Balochistan is dismissed over deadly attacks targeting Shia Muslims in the provincial capital Quetta.

An influential Pakistani preacher and thousands of his supporters are due to reach Islamabad on Monday as part of a "long march" against corruption.

French Foreign Minister Laurent Fabius says his country's involvement in the campaign against Islamists in Mali will last "a matter of weeks".

The Middle East faces a "staggering" humanitarian crisis due to the conflict in Syria, according to an international aid agency.