Asserting that perpetrators of the Mumbai terror carnage should be punished, Prime Minister Manmohan Singh said India will await the outcome of the international community's efforts in this regard before deciding on its options.Asked about the military, political and economic options before India in dealing with those behind the terror attacks, Singh responded with a cryptic ‘we will wait for the outcome’ of the world community's efforts.Singh, who was addressing a joint press conference with Russian President Dmitry Medvedev after their talks, made it clear that India wanted the US and others to put pressure on Pakistan to ensure that those behind the ‘horrible’ crime in Mumbai are punished."I have impressed upon all the world leaders who called me that people of India feel a sense of hurt and anger as never seen before," he said."It is the obligation of all concerned to ensure that perpetrators of this horrible crime are brought to book. That is our message to everybody and anybody who have come here," Singh said.His response came when asked whether India had requested US Secretary of State Condoleezza Rice, during her visit to India on Wednesday, to tell Pakistan to arrest Lashkar-e-Toiba (LeT) chief Hafiz Mohd Saeed.Underlining that ‘perpetrators of this crime should be brought to book’, the Prime Minister said ‘this message’ had been conveyed to Rice as also other world leaders.Making a veiled reference to involvement of Pakistan-based terrorists in the Mumbai attacks, the Prime Minister said India as ‘other relevant countries have come to the same conclusion that territory of a neighbouring country has been used for perpetrating this crime’ in Mumbai."We expect the world community to recognise. We expect the international community to wake up and recognise that terror anywhere and everywhere constitutes a threat to world peace and prosperity," Singh said.Rice, who met the Prime Minister besides External Affairs Minister Pranab Mukherjee during her visit here, was provided with evidence about involvement of Pakistani terrorists in the Mumbai attacks.The US has also independently collected evidence which points to involvement of Pakistan-based terrorists. Singh said he conveyed the ‘sense of anger and outrage’ in India over the Mumbai attacks to the Russian President during their talks."We both agreed that these attacks represent a threat to all open and pluralistic societies, and require a major intensification of efforts against supporters and perpetrators of terrorism anywhere in the world," Singh said.Medvedev expressed solidarity with India and said Moscow stood ready to work with New Delhi, using ‘all avenues’ and extending all possible assistance in the situation.Singh appreciated Russia's expression of solidarity with India at this moment.