No more Mr. Nice Guy?CHICAGO - Democratic Sen. Barack Obama on Wednesday blamed his primary defeats in Ohio and Texas on rival Sen. Hillary Rodham Clinton's criticism and news coverage that he argued benefited her at his expense. The presidential candidate said he planned to do more in the days ahead to raise doubts about his opponent's claims to foreign policy and other Washington experience. In a television ad that her campaign credits with helping her win, she portrayed herself as most prepared to handle an international crisis.

This is definitely going to be a battle to the end.