 PA President Mahmoud Abbas called for the release of Shalit in a press conference with visiting German President Christian Wulff.Shalit's father had blamed the U.S. for blocking talks on his son's release.Netanyahu responded to a pilgrimage march, called by Shalit's father for his release, by saying he was willing to release 1,000 Palestinian prisoners in exchange for Shalit, but that top Hamas leaders would not be among those released.