French President Francois Hollande arrived in Qatar to oversee the signing of a multi-billion-euro deal to sell 24 Rafale fighter jets to the gas-rich emirate.
Italy's lower house of parliament is due to take a final vote on a bill to radically overhaul the electoral system aimed at ending decades of political instability.
Chinese President Xi Jinping will visit Russia this week to attend World War II anniversary celebrations, with Kazakhstan and Belarus also on his itinerary.
Prime Minister Tony Abbott said Australia and Europe were in talks on how to stop asylum-seeker boats after the success of his government's controversial polices on the issue.
The UN Security Council was unable to agree on a Russian-drafted statement demanding an immediate ceasefire or at least humanitarian pauses in the fighting in Yemen.
Bare-chested Femen activists making Nazi salutes disrupted a speech by France's far-right leader Marine Le Pen at her National Front party's traditional May 1 rally in Paris.
Greek Finance Minister Yanis Varoufakis insisted in a German newspaper interview that he is still in charge of Greece's team handling crucial talks with creditors.
Iran can play a major role in persuading Syrian President Bashar al-Assad to cooperate in peace talks, EU foreign affairs chief Federica Mogherini said.
A former Portuguese police officer who headed the investigation into the 2007 disappearance of British girl Madeleine McCann was ordered to pay 500,000 euros to her parents in a libel case.