TOPSHOTS A ripped off Greek national flag flutters in central Athens on July 22, 2015. Prime Minister Alexis Tsipras faces a new test of his authority in parliament, where MPs are to vote on a second batch of reforms to help unlock a bailout for Greece's stricken economy.The embattled premier last week faced a revolt by a fifth of the lawmakers in his radical-left Syriza party over changes to taxes, pensions and labour rules demanded by EU-IMF creditors. .AFP PHOTO/ LOUISA GOULIAMAKI