The Greek Prime Minister George Papandreou has replaced his Finance Minister in a bid to push through unpopular austerity measures demanded by the EU. Evangelos Venizelos has been promoted to the Finance Ministry and tasked with tackling a crippling debt crisis. The former Defence Minister replaces George Papaconstantinou, who has been moved to the Environment Ministry. The proposed reforms have sparked riots on the streets of Athens, nationwide strikes and rattled global markets. The French and German leaders are due to meet shortly in Berlin to discuss how to prevent Greece defaulting.