'But I have not given up hope. Our high commissioner has spoken to the ISI (Inter-Services Intelligence) chief and their foreign office. We are hopeful that they will move ahead in punishing those behind the Mumbai terror attack,' he said.

Asked if India was going soft on Pakistan regarding the Mumbai terror attack November last year, the prime minister said India had to work with neighbours to ensure peace in South Asia.

'I have often said that we can choose our friends but have no choice with regard to neighbours.'

He said India, which had been a victim of terrorism for nearly 25 years, has appealed to world leaders at all forums to put pressure on Pakistan to leave terrorism and walk the path of friendship.