The UK and France accuse the Syrian government over the failure of the second round of Geneva peace talks with opposition groups.

The former Iraqi Vice-President Tariq al-Hashemi blames Prime Minister Nouri al-Maliki for the country's crisis in an interview with the BBC.

Russian ski cross racer Maria Komissarova has successful surgery after breaking her spine in a training session in Sochi.

US Secretary of State John Kerry is to give a keynote speech urging the global community to act against climate change, during a visit to Indonesia.

Iraq's radical Shia cleric Moqtada Sadr, who gained influence after the US-led invasion in 2003, announces his retirement from political life.

Supporters and opponents of Venezuela's President Maduro take to the streets of Caracas in rival marches amid growing political tension.

The BBC's science correspondent Pallab Ghosh reports from Chicago on why the US has been gripped by such extreme weather patterns.

Scientists at Northwestern University, US, are developing robots that will be able to swim around debris in total darkness, such as inside a sunken ship.