The UN nuclear watchdog chief, Yukiya Amano, arrived in Tehran Monday to demand more cooperation from Iran on its nuclear activities, as Tehran prepares to engage with world powers in crucial talks in Baghdad over its controversial nuclear programme.

Dominican Republic voters went to the polls Sunday to elect their next leader in a closely-fought race between ruling party-backed economist Danilo Medina and former president Hipolito Mejia.

The victory of Serbian nationalist Tomislav Nikolic in presidential elections Sunday could break up an already agreed pro-EU cabinet of his rival Boris Tadic and the Socialists, analysts warned.

A rocket-propelled grenade exploded near a team of UN observers in a Damascus suburb Sunday, the military said, as dozens of people were killed in violence while clashes raged between regime troops and armed rebels.

Serb nationalist Tomislav Nikolic upset the odds to defeat incumbent Boris Tadic in a presidential run-off Sunday but vowed to pursue his predecessor's drive for the Balkans nation to join the EU.

Nationalist challenger Tomislav Nikolic is leading Serbia's Sunday presidential vote with two percent over incumbent Boris Tadic, initial estimates by independent election monitor CESID showed.

US President Barack Obama declared Sunday that the world was behind his strategy to end the war in Afghanistan, as more than 50 leaders gathered to hammer out a withdrawal plan at a key NATO summit.

Pakistan restored access to Twitter on Sunday, just hours after blocking the site over posts related to a contest involving caricatures of the Prophet Mohammed, the telecoms authority said.

Serbians voted Sunday in a presidential run-off with incumbent Boris Tadic, who has vowed to lead the Balkans nation into the EU, set to defeat nationalist challenger Tomislav Nikolic.

A rocket-propelled grenade exploded near a team of UN observers in a Damascus suburb on Sunday, the military said, as clashes between regime troops and armed rebels raged in and around the Syrian capital.