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.
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.
The FBI investigates how activists linked to Anonymous obtained a recording of a phone call between US and UK police on their operations against hacking.
The Libyan authorities are being urged to investigate the death of the country's former Ambassador to France, who died less than 24 hours after being arrested by Tripoli-based militia.
A Cuban woman who writes a blog critical of the Communist authorities says she will not be able to travel to Brazil after Cuba refused her an exit visa.
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.