World stocks rise amid hopes for central bank help Associated Press Copyright 2012 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. Updated 02:13 a.m., Friday, June 15, 2012 Investors have been on edge as Greece's election draws near because parties opposed to the terms of the country's financial bailout could take control of the government. Another flash point is Spain, which faces a two-pronged crisis: financially feeble banks in need of cash injections from outside, and soaring borrowing rates due to investor reluctance to purchase its bonds. Spanish Prime Minister Mariano Rajoy has asked EU leaders to push the European Central Bank to restart a program of Spanish bond purchases that helped ease the country's borrowing rate last fall. [...] they have been pushed to do something. [...] a U.S.