Washington: Often targeted by the Republicans for a less than assertive foreign policy, US President Barack Obama's campaign machinery is seeking to turn the tables on the opponents by making the elimination of Osama bin Laden as their main election plank.

In an election year when every move counts, the Democrats have made a calculated move to milk the first anniversary of Osama's killing as an achievement of Barack Obama who as a "decider-in-chief" authorised the courageous raid.

According to the latest ad released by Obama's re-election campaign, the Democrats have cast a doubt over whether the presidential challenger Mitt Romney would have gone ahead to authorise the Abbottabad raid on May 2 last year.

Looking to seize the moment, Obama has also given a rare interview, talking about Osama's killing in his hideout, from the White House Situation Room to NBC that will air it on the anniversary day.

In a video released on Friday, suitably titled 'One Chance', former president Bill Clinton praises Obama for ordering the Navy SEAL raid on bin Laden's compound.

"Which path would Mitt Romney have taken?" the ad goes on to ask.

The ad points out that in 2008, Romney had said that "it's not worth moving heaven and earth spending billions of dollars just trying to catch one person". He had also criticized Obama, the then presidential contender, for talking about drone strikes in Pakistan.

A year after the raid that saw US Navy SEALS enter Pakistani territory and kill the al Qaeda leader, then billed as America's enemy number 1, the Democratic campaign managers are making sure all credit goes to the Commander-in Chief.

"Osama bin Laden is dead, and General Motors is alive". This is how Vice President Joe Biden summed up Obama's presidential term in a speech at New York University this week, according to the Washington Post.

"You have to ask yourself... if Governor Romney were president, would he have used the same slogan in reverse?" Biden asked, leaving out no chance to hammer in the point.

The Democratic strategy has obviously not gone down well with the Republicans, who are fuming over what they call are "cheap" political tactics.

"Shame on Obama for diminishing the memory of September 11th and the killing of Osama bin Laden by turning it into a cheap political attack ad,"     Republican Senator John McCain, who was trounced by Obama in 2008, said of the campaign ad.

Romney's spokeswoman, Andrea Saul, meanwhile said in a statement that "it's now sad to see the Obama campaign seek to use an event that unified our country to once again divide us, in order to try to distract voters' attention from the failures of his administration".

The Republicans often accuse Obama of following a weak foreign policy, with Romney charging that the President is "leading from behind" in the world.

"I think the way that we've handled it represents exactly the balance we need to strike," White House Spokesman Jay Carney said earlier this week of the Abbottabad raid.