AlQa'dah 17, 1432, Oct 15, 2011, SPA - US President Barack Obama and German Chancellor Angela Merkel agreed in a telephone conversation Friday to stay in close contact ahead of a meeting of the leaders of the Group of 20 leading and emerging economies next month. The leaders discussed the economic crisis in the eurozone, the White House was quoted as saying by the German Press Agency "DPA". The G20 leaders are to meet in Cannes in November to hammer out further steps to address the crisis.