NEW DELHI:-  India is undecided on whether External Affairs Minister Sushma Swaraj will participate in the ‘Heart of Asia’ conference for which host Pakistan has invited her, it was officially said Thursday. External Affairs Ministry spokesperson Vikas Swarup confirmed that a formal invitation has been received for the conference that will take place in Islamabad on December 7 and 8. But added that “We are yet to decide on the level of our participation.”–Online