Greece has witnessed its most serious unrest over its economic crisis, as the country's parliament passed an austerity package to help tackle the government's huge debts.<br /><br />The clashes in Athens broke out as George Papandreou, the Greek prime minister, visited Berlin and held talks with Angela Merkel, the German prime minister. <br /><br />Nadim Baba reports from Berlin. <br /><br />(March 5, 2010)
