Obama, Clinton battle over national security

By Caren Bohan

PROVIDENCE, Rhode Island (Reuters) - Presidential candidate Barack Obama accused rival Democrat Hillary Clinton of using the politics of fear on Saturday after her campaign released an ad suggesting that Obama lacked enough security experience to keep America safe.

"There are those who are telling you not to believe. There are those who are trying to feed your fear and your cynicism and your doubts," the first-term Illinois senator told supporters in Providence, Rhode Island.

Obama is seeking to raise doubts about Clinton's judgment, especially around her 2002 Senate vote to authorize the war in Iraq, in response to the television ad. It suggested Obama would not be able to handle a national security crisis.

The jabs over national security come as the candidates race toward Tuesday's primary votes in Ohio and Texas, big states that are considered must-wins for Clinton.

"We've been talking about change from the start of this campaign," Obama said. "Real change isn't voting for George Bush's war in Iraq and then telling the American people it was actually a vote for more diplomacy."

The former first lady, speaking in Texas, argued she was the only Democrat who can go toe-to-toe with Republican front-runner John McCain, a former prisoner of war who has been a strong advocate of larger troop numbers in Iraq.

"My opponent is now saying that raising national security in this election is fear-mongering ... . This is a wartime election and it matters who we put into the White House," the New York senator said.

"If Senator Obama is unwilling to engage me over national security, how is he going to engage Senator McCain?" Clinton told reporters later in the day.