Sunday, Nov. 30, 2003 10:19 p.m. ESTPanetta Warning Reveals Widening Dean-Clinton Rift Yet another Clinton insider is openly criticizing his party's presidential front-runner, Howard Dean, warning Democrats that the ex-Vermont governor is far too liberal to defeat President Bush in next year's election. "There clearly are concerns about Dean's ability to appeal to the entire country, particularly on national security issues," former White House Chief of Staff Leon Panetta told the Washington Times on Friday. "How can you compete with President Bush on the national security front? There is some concern about whether Dean can rise to the occasion on...