Justice Minister and Israeli peace negotiator Tzipi Livni defended US Secretary of State John Kerry on Friday, after comments he made on Thursday warning Israel of a third intifada."John Kerry is a man who cares about the State of Israel, he believes a peace agreement between us and the Palestinians is critical for Israel's security and future. He puts a lot of time, effort and heart into this issue [of peace], it's something that drives him," she told Israel Radio."He is speaking from his heart, not in order to attack Israel," she stressed.