WASHINGTON (AP) — President Barack Obama is launching a sharp critique of Mitt Romney's business record, airing a hard-hitting TV ad that recounts the demise of a Kansas City, Mo., steel mill that was restructured by Romney's private equity firm and led to hundreds of job losses.

The ad and events targeting Romney's role with Bain Capital planned for this week mark the president's most forceful attempt to define Romney's business record before the November election.

The ad includes interviews with former workers at the steel plant, who say Bain's role led to job losses and slashed benefits. One worker calls Romney a "job destroyer."

Romney's campaign did not respond to the ad early Monday.