Lieutenant-General David Richards, the British leader of the NATO troops in Afghanistan, also said that coalition soldiers would focus more attention on reconstruction within the country than on fighting the Taliban militia over the winter.
"If you said to me, if your aim is to win, I'd say no. I haven't got enough (to) win this, say, in the next six months, but I can continue to make sufficient improvements to keep the people here confident in us and in their government," Richards said, speaking to the Financial Times from Kabul.
Richards, who commands about 31,000 International Security Assistance Force (ISAF) troops from 37 countries, said that it would be possible to "persuade through substantive improvement, the people of this country that we are making real progress."
"I can persuade them of that without huge amounts of additional troops," he said, before noting that he was "confident that NATO nations will continue to answer the call."
Attempting to persuade Afghans that NATO is making progress in the country, Richards said that significant visible improvements to persuade them to "keep the faith" with foreign troops.
"Something that really hit me in the eye was just how important it was for the Afghan people for us to prove that we could fight and defend their areas," Richards told The Times.
"We did prove this but we don't need to carry on doing this in the long term, and I hope the fighting element throughout the winter will be minimal compared with what our troops have had to face in the summer."
He added that: "I think in the last few months we have managed to stabilise the security situation and now I want to put a security cloak around the reconstruction programmes."
"Operation Oqab is the first pan-Afghanistan synchronised mission designed to facilitate more focused and visible reconstruction and governance."
Richards said that he had issued a directive to all coalition troops to not just "monitor" the taking of illegal road tolls by local police but "to physically intervene and stop them".
He also said that while he regularly called off military operations due to the risk to civilians, the "ultimate criminal" was the Taliban who used non-combatants as human shields.
"The ultimate criminal is the Taliban. I think it is quite amazing that there have not been more civilian casualties given the completely callous disregard of the Taliban for civilians."
The general insisted that the "security situation has improved" but noted that "there are bound to be tactical blips and setbacks".

Copyright AFP (Agence France-Presse), 2006