CAMP DAVID, Md. - The White House said on Saturday that Syria's violence would not end without a political changeover, saying external monitors and a ceasefire would not be sufficient to address the problem."Stopping the violence depends on a political transition," White House aide Ben Rhodes told reporters during the G8 summit at Camp David, where Syria was on the agenda on Friday evening."We believe change has to include [Syrian President] Bashar Assad leaving power," Rhodes said, describing the US view. Read full story here.