Karl Rove intensified his attack on Senator Hillary Rodham Clinton Tuesday, saying she lacked the vision to be president while saying she was “so weak” on national security and support for the armed forces.

Mr. Rove, President Bush’s political adviser, has been criticizing Mrs. Clinton since Monday, when he announced his intention to resign from the White House and coupled it with candid analysis, notably, calling Mrs. Clinton a “fatally flawed” presidential candidate.

Mrs. Clinton, of New York, and her advisers have denounced the attacks while privately welcoming them, hopeful that Mr. Rove, a bête noire to Democrats, will spur liberal skeptics of Mrs. Clinton to rally to her.

Advisers to Senator Barack Obama of Illinois, a Clinton rival, conjecture that Mr. Rove is trying to help Mrs. Clinton win the Democratic presidential nomination because, this thinking goes, she would be easier to beat than Mr. Obama.