Greek politicians are to vote later on Wednesday on austerity measures that have sparked nationwide strikes and the worst rioting in Athens for more than year. Prime Minister George Papandreou has said that only his 28 billion-euro austerity plan will get Greece back on its feet. He said if the package is not approved, Greece could run out of money within weeks. Greek officials say 46 people were injured in the capital on Tuesday, including 37 policemen, after an anti-cuts rally against turned violent. Police used tear gas against groups of youths in the streets around parliament, and arrested at least 14 people. The roads of the capital were left strewn with broken paving stones and other debris after the first day of a 48-hour general strike against the planned austerity measures. The strike halted most public services, closed banks and saw hospitals operating on skeleton staff while many flights, trains, buses and ferries were cancelled. More than 5,000 police officers were deployed to control the protests. Late on Tuesday, the newly-named IMF chief, Christine Lagarde, urged Greek politicians to unite to avoid a debt default. She said the country's destiny is at stake.