Egypt is being called to vote in a referendum on a new constitution the opposition fears will be used to usher in an extremist interpretation of laws.
In Iran, attempts to get onto foreign news pages have been met with a page saying, "Access to this page is a violation of computer crime laws."
Iran has warned one of the US navy's biggest warships to keep away from the Gulf, in an escalating showdown that may pitch into armed confrontation.
A rebel official in Libya's besieged city of Misrata pleaded for Britain and France to send troops to help fight Muammar Gaddafi's forces.
The rebel council governing the Libyan city of Misrata said on Tuesday it was formally asking for Western troops to intervene to protect them.
A ferry rescued almost 1 000 people from Misrata on Monday and Britain said it plans to pick up 5 000 more.
Dilma Rousseff took over as Brazil's first female president on Saturday with pledges to build on the policies of her hugely popular predecessor.
Stepping into the glare lights for their first fresh air in 10 weeks, the 33 men in wraparound sunglasses resembled rock stars more than miners.
Pumping their fists, or falling to their knees, some of the 33 Chile miners trapped below ground savoured their first tastes of freedom on Wednesday.
A massive blackout plunged millions in Brazil's largest cities into darkness, sparking major disruptions and energy supply concerns on Wednesday.