(AGI) Berlin, July 6 - Angela Merkel is the greatest leader inEurope, Hillary Clinton said during her trip in Germany topromote her book Hard Choices. The former U.S. Secretary ofState, who many believe will run for the presidency in 2016,said it is also time for the U.S. to have a female leader. "Ithink we are ready for a woman to break through the glassceiling", she said. . .