Indian external affairs minister, Pranab Mukherjee Saturday said India is keeping all options open if Pakistan does not act against perpetrators of the Mumbai attacks. While talking to an Indian TV channel, he stressed that India was keeping options open if Pakistan did not act upon the evidence linking Pakistani nationals to the Mumbai carnage. "Pakistan, what they have asked for, we have given them. We expect them to act on it. If they don't act on it, what follow up steps we take at what space of time will take place, future course will decide," he said.