 A number of NATO member states also pledged to provide additional assets, including fighters, helicopters, infantry companies as well as training teams that will mentor the Afghan National Army.NATO Secretary General Jaap de Hoop Scheffer said that the removal of some of the caveats meant that some 20,000 of the 32,000 NATO troops in ISAF are made "more usable" for combat duties and that 90% of the formal mission requirements were now filled.Military sources however told reporters at the summit that these caveats never existed in emergency situations, adding that it would be a strange alliance where one country's soldiers refused to support their allies in an emergency.