NATO's chief during his recent visit to Afghanistan also described the alliance's mission in Afghanistan as a "necessity and not a choice" and warned if Taliban and terrorists are not contained their activities would expand to Europe.

Nevertheless, none of the member states had made pledge to send reinforcement to Afghanistan.

Germany, a key ally of the Untied States in war on terror, frankly rejected Washington's request to deploy troops in Afghanistan's troubled southern region and German chancellor Angela Merkel stressed on February 18 that Berlin has no plan to expand its military mission in Afghanistan despite pressure from NATO allies.

Australia and New Zealand, according to media reports, have decided not to send additional troops to Afghanistan.

Canadian government's military mission which is due to end next February has linked the extension to contributing at least 1,000 more troops to Kandahar where 2,500 Canadian troops have been stationed.

Canadian Prime Minister Stephen Harper has also warned, "If NATO can't come through with that help, then I think, frankly, NATO's own reputation and future will be in grave jeopardy."

On the contrast, in an attempt to allay international community 's concern over Taliban threat and extremism, the Taliban chief stressed in the statement that the "Taliban represent no threat to anyone as they want to have good relations with all nations in line with the Islamic law."

And to isolate Washington in war on terror in Afghanistan, the Taliban reclusive leader moreover asked US allies, "to avoid the deaths of their soldiers for the sake of US interests."

Conflicts and Taliban-related violence had left more than 6,000 people including 1,200 civilians dead in 2007, the bloodiest year since the fall of Taliban hierarchy six years ago.