Washington: The current timetable to withdraw troops from Afghanistan and transition of the security of the country by 2014 would help the US and its international partners to achieve their objective in the war ravaged nation, the White House has said.

The White House exuded confidence that, despite the current developments in the war-torn country, the decision of the Obama Administration to withdraw troops from Afghanistan by 2014 would ultimately prove to be a correct one.

"Obviously, there are challenges. There have been setbacks. But the progress is also undeniable, when you evaluate where we are against the objectives the President put into place when he announced his strategy," White House Press Secretary Jay Carney told reporters.

"So it is the assessment of this President, it is the assessment of NATO, that the timetable that is governing the drawdown, that is governing the transition, is the right timetable. It is a timetable that will allow us to achieve our objectives, as well as bring our men and women home," Carney said in response to a question.

"It is the focus of the policy of the President to disrupt, dismantle and defeat al Qaeda; to stabilize Afghanistan enough so that Afghan forces can gradually take over security responsibility for their country. That has to be, ultimately, Afghanistan's future. We have sacrificed greatly, in our national security interests, but to ensure that that can come about," he said.

"The President made clear in announcing his Afghanistan strategy that we and our allies and a broad coalition of international partners will continue to have a robust, strategic relationship with Afghanistan beyond the transition period. But it's 2012, and what that looks like obviously is difficult to predict with any specificity right now," he noted.

The White House press secretary acknowledged that there has been challenge in Afghanistan and it continues to be a difficult one. But at the same time, it is also true is that since Obama began implementing his strategy, with its very clear focus on the top priority of ultimately defeating al Qaeda; the US has met with success and has achieved significant progress.

"We are withdrawing American troops as part of the President's plan. We will continue to do that. We will continue as we do to strengthen the Afghan security forces. We will continue to take the fight to al Qaeda across the region, to diminish and ultimately defeat core al Qaeda, which is based there in the region.

And in accordance with the President's strategy, as agreed to at Lisbon by NATO, we will finish the transfer to Afghan security lead in 2014. That's the mission, and we are sticking to it," Carney asserted.

"We have to stabilize Afghanistan enough, stabilize the government enough to give it the space to fully train up the necessary Afghan security forces so that Afghans can take responsibility for the security of their country," he said, adding that was a significant refocusing and narrowing of its objectives.