The euro firmed and Athens breathed a sigh of relief Friday after European leaders agreed to rescue debt-ridden Greece, but markets stayed cautious amid lingering concerns over the currency’s health. The deal, inked by heavyweights Germany and France, ended weeks of EU bickering and opened a new chapter in eurozone history — allowing the Washington-based International Monetary Fund to have a say in euro affairs for the first time in the currency's 11-year existence. Meanwhile the question of describing an economic government for the European Union faced staunch opposition from Britain, Ireland and the Netherlands, as the deal's fine print highlighted rifts between the major players. Duration: 01:46