Greek Prime Minister George Papandreou is set to announce a new cabinet in a concessionary move as he seeks support for new austerity measures. Papandreou, who will stay in his post, said he will put the new government to a vote of confidence in the parliament, the BBC reported Thursday. Renewed fears that Greece will default on its debt have shaken markets. The proposed measures are necessary to gain EU and IMF aid, but have been met with fierce opposition in Greece. Athens witnessed some of the most violent protests in more than a year on Wednesday as demonstrators went on to the streets and took part in a general strike. Papandreou had also faced the threat of a revolt in his socialist Pasok party over the controversial package.