The United States has assured that it will share with India the outcome of the full review by the US on what and when they knew about David Headley and his connection with the Mumbai terror attack.The Home Minister Mr. Chidambaram has said, the full review is at present going on in the United States.Speaking to media in New Delhi today, he said that the US had shared informations with India in the months leading to the 26/11 attack as well as after it though Headley's name was not mentioned and the issue has been blown out of proportions. He said that the intelligence sharings between India and the US was extremely good and the name of Headley was shared with India in October last year.In reply to a question on whether Headley's extradition will figure in the talks with the US President Obama who will be coming to India on Friday, Mr. Chidambaram said that extradition is an option and India will continue to pursue this option. On the possibility of filing a chargesheet against Headley in connection with the Mumbai attack, he said that the decision has to be taken by the National Investigation Agency (NIA) which is the prosecuting agency and not by the government.In reply to another question, the Home Minister said that the two governments are working on an understanding with reference to counter terrorism initiative.The Home Minister said that no decision has been taken on the demand by Trinamul Congress leader Ms Mamta Bannerjee for withdrawal of para-military forces from West Bengal.