The strategy would involve building Afghan institutions and handing over greater responsibility to domestic authorities.

"I think we should talk about transition strategy, which is something completely different," said Kai Eide, the UN Secretary-General's Special Representative for Afghanistan.

"The long-term commitment depends on a high degree of confidence and trust between the Government and the international community," he noted.

The announcement came shortly before the US President Barack Obama officially announced his strategy on Afghanistan at the United States Military Academy.

The US has decided to deploy 30,000 additional troops to the war-torn nation over the next six months, which will bring the number of soldiers to 100,000.

Eide also noted that the Obama administration should also consider transferring more responsibilities to the Afghan institutions and personnel.

"If we are to deliver services to the people, it can't be done by international parallel structures. It has to be done by Afghan institutions. That's going to take time, but the longer we wait the more time it will take," Eide noted.

"It really means pushing more and more responsibilities on to the Afghan authorities, allowing them to take more responsibilities," he added.

The UN official, who also heads the UN Assistance Mission in Afghanistan (UNAMA), underlined that the next six months can be used to regain the momentum lost during the election process, which was riddled with fraud.

President Hamid Karzai, after his appointment, had promised Afghans and the international community to root out corruption in his government.

The UN and the world leaders had asked Karzai, in strong terms, to combat corruption in order to enlist their support and aid.

Earlier this week, UN Chief Ban Ki-moon welcomed the international conference on Afghanistan to be held in London in January to discuss the country's progress made following the presidential elections.