INDIA has a 'fair amount' of intelligence inputs about Pakistan's involvement in the Monday's suicide attack on its embassy in Kabul, Indian National Security Advisor MK Narayanan said on Saturday, reports Indian media. "We not only suspect but we have a fair amount of intelligence (on the involvement of Pakistan)," Narayanan told television channels when asked whether India suspects Pakistan's involvement in the attack. "The ISI needs to be destroyed. We made this point, whenever we have had a chance, to interlocutors across the world... There might have been some tactical restraint for some time, obviously that restraint is no longer present," he said. Specifically asked about reports that ISI was behind the Kabul attack, Narayanan said "we have no doubt that the ISI is behind this". "The people of this country deserve to know the facts rather than being carried away by people who make statements that these are insinuations. There are no insinuations," Narayanan said. He said there was a need to retaliate to such acts of terror. "I think we need to pay back in the same coin. We are quite clear in our mind," he said. When asked who should be paid back, he replied, "Those who are responsible." Asked whether such acts would impede the peace process, he said: "I don't think ISI has ever been a part of the peace process.... I think we need to make a distinction" between the two. He said India-Pakistan relations were sought to be improved through a comprehensive dialogue mechanism. "The anti-terror mechanism was one piece of this picture. The hope was that in course of time both sides would share whatever information they have and come up with a holistic idea of what was going on," he said. "Talk-talk is better than fight-fight. But it hasn't worked so far. In some way, we haven't arrived at the decision that we should go for fight-fight so let talk-talk continue for the moment," Narayanan said. The NSA said there was a 'hiccup' in the peace process towards the end of 2006 and early 2007. "It hasn't really picked up.... We are hoping that the new administration will take this up again."