ISLAMABAD " India has linked the resumption of stalled Indo-Pak peace process with what it calls 'real action' by Pakistan against the culprits of Mumbai attacks. Relations between nuclear-armed Pakistan and India strained since militants killed 179 people in the attacks in India's commercial capital of Mumbai with New Delhi putting the years' long dialogue on hold. After that India provided Pakistan with the so-called evidence on Mumbai attacks claiming the attacks were planned in Pakistan and also naming some individuals in this regard. The Indian Government also demanded of Pakistan to hand over those people to New Delhi. Pakistan, on its part, pledged all possible cooperation but ruled out handing over of wanted persons to India. However, it has not yet formally responded to Indian dossier on Mumbai attacks. Pakistan has been trying hard through diplomatic channels meanwhile to impress upon its eastern neighbour for the revival of peace process launched back in 2004 to resolve the Kashmir and other bilateral issues. "All Pakistani efforts to restart the Indo-Pak peace process have proved fruitless owing to stiff position that India has opted for in the wake of Mumbai carnage," said a senior Pakistani official here desiring not to be named. He said India had made it clear that Pakistan would have to show its seriousness on Mumbai attacks. "The Indians want strong action against the people that they blame for Mumbai carnage and also saying their hand over to New Delhi will be the most appropriate thing in the present circumstances," the official said. Hence, he said there were no chances of resumption of peace process between the archrival nuclear nations in the near future. He said the hold on peace process had resulted in great harm to the peace process, as the two sides had been talking to each other for years before that in effort to iron out differences on Kashmir and other disputes. He feared that in case the tensions continue to mar the Indo-Pak relations, it could reverse even the gains made in the sphere of confidence building measures including the ceasefire on the Line of Control (LoC), trade between the divided parts of Kashmir and initiation of bus services across the LoC and international border, etc.