BRUSSELS (Reuters) - Euro zone finance ministers and the International Monetary Fund clinched agreement on reducing Greece's debt on Monday in a breakthrough to release urgently needed loans to keep the near-bankrupt economy afloat. After 12 hours of talks at their third meeting in as many weeks, Greece's international lenders agreed on a package of measures to reduce Greek debt by 40 billion euros, cutting it to 124 percent of gross domestic product by 2020. ...