A clear timetable and plan for training Afghan security forces and battling police corruption were among the goals Brown said should be met, Press TV reported.
"Within nine months, President Karzai should have completed the process of appointing 400 provincial and district governors," Brown had said.
The Afghan president, however, added that mentioning such remarks "doesn't affect me and it doesn't affect the Afghan people."
The interview comes after Brown pledged 500; US President Barack Obama vowed 30,000; and their NATO allies committed 5,000 more troops to be deployed in Afghanistan.
Although nearly 110,000 foreign troops are currently fighting the militants in Afghanistan, they have yet to establish stability in the country.
Karzai finds Brown remarks 'extremely insulting'


