U.S. Treasury Undersecretary for International Affairs Lael Brainard leaves the headquarters of the PASOK party after her meeting with Greek socialists' leader Evangelos Venizelos in Athens, Tuesday, May 29, 2012. Greece's caretaker government says it will do all it can to ensure the loan-dependent country does not run out of cash amid the protracted political turmoil ahead of elections in June. (AP Photo/Thanassis Stavrakis)