The U.N. Security Council could vote Saturday on a draft resolution that would pressure the Syrian government to stop a sustained, bloody crackdown on dissidents.
Chris Huhne's resignation as Energy Secretary will be a loss to the cabinet and the Lib Dems, his former parliamentary private secretary tells BBC News.
Tens of thousands of people march in Moscow in protest at Prime Minister Vladimir Putin, while his supporters hold a rally elsewhere in Russia's capital.
Activists say Syrian forces killed more than 200 people in Homs in the worst violence since anti-government protests began, but the government denies it.
At least 37 people were killed during a shootout at a meeting to resolve cattle disputes in South Sudan, officials said Saturday, the latest in a spate of violence in the world's newest nation.