IHT Quick Read: Nov. 21 NEWS Efforts to agree on a cease-fire between Israel and Hamas intensified Tuesday, but the struggle to achieve even a brief pause in the fighting emphasized the obstacles to finding a lasting solution. Ethan Bronner reports from Jerusalem and David D. Kirkpatrick from Cairo. Rebel fighters seized Goma, an important commercial hub in the Democratic Republic of Congo on Tuesday, setting off riots in several places across the country and raising serious questions about the stability of Congo as a whole. Jeffrey Gettleman reports from Nairobi and John Kron from Kampala. Vladimir Putin, that practitioner of ruthless pragmatism, is facing a problem he has never encountered: the need for an ideology. A former prime minister of Croatia, Ivo Sanader, was sentenced Tuesday to 10 years in prison on corruption charges, including war profiteering and taking bribes from two foreign companies, becoming the most senior official in the former Yugoslavia to face jail time for graft. Dan Bilefsky reports. Euro zone finance ministers and international officials ended marathon talks on Greece's intractable debt early Wednesday morning still at loggerheads over payment of further emergency aid. James Kanter reports from Brussels and Niki Kitsantonis from Athens. Facebook, Google and other Internet companies have faced the scrutiny of Isabelle Falque-Pierrotin and her colleagues at the French data protection agency. SCIENCE Some veterans with post-traumatic stress disorder are seeking treatment from Michael and Ann Mithoefer, a husband-and-wife team who combine psychotherapy with doses of Ecstasy. Benedict Carey reports. SPORTS David Beckham, 37, may be preparing for his last hurrah around Hollywood, but as the athlete fades, his image-makers are keeping many balls in play.