WASHINGTON - Afghan President Hamid Karzai Sunday fended off repeated attempts by an American journalist of Indian-origin to criticise Pakistan, saying Islamabad was key to success of reaching any peace deal with Afghan Taliban. Pakistan is extremely important for a quick solution, he said in an interview with CNNs Fareed Zakaria, an Indian-American, in his first interview since President Barack Obama announced a drawdown of American forces from the country. Karzai, who recently had meetings in Islamabad with top Pakistani leadership on bilateral relations and peace and security efforts in Afghanistan where the US-led international forces have been fighting Taliban for almost a decade now, also said that exact whereabouts of Taliban leader Mullah Omar are not known. We were just in Pakistan a few days ago. We had a very extensive, very detailed, very heart-to-heart, brother-to-brother dialogue, and I sincerely hope very, very much that that dialogue will yield results, you know, for the good of all of us, he said. Karzai also ruled out asking the United States for more troops if the security situation in Afghanistan deteriorates during or following the US military drawdown.