Nobel peace laureate Mohammad ElBaradei who is emerging as a key figure in popular uprising in Egypt has asked President Hosni Mubarak to leave the country, if he wants to save his skin. He also exuded confidence that the Army will side with the people. The former UN nuclear chief inspector has told a British newspaper that the word on the streets in Cairo is no longer that Mubarak should go but, that he should be put on trial. This is ElBaradei's first interview, since the outbreak of revolt against the powerful President. He is the choice for the top post of eight major opposition groups leading the revolt in Egypt.Meanwhile, the embattled President Mubarak on Tuesday offered to open immediate talks with opposition groups as pressure on him mounted from the powerful military which termed peoples' demands as legitimate and said it will not fire on protesters. The offer came as tens of thousands of Egyptians started converging at the Tahrir Square – the hub of the anti- government demonstrations in the heart of Cairo – for their 'million man march' to force 82-year-old Mubarak to step down. Amid heavy presence of military and armoured vehicles on the streets in downtown Cairo, protesters waving placards reading 'down with Mubarak', 'Mubarak's game is over' spilled on the Tahrir Square. Identity cards of protesters were scrutinized by the army personnel before letting them into the square. Facing the first serious challenge to his 30-year- rule, Mubarak has been hoping for the military backing to stem the tide against him.