The government is trying to ensure import of natural gas through trans-national gas pipeline including from Iran through the Iran-Pakistan-India (IPI) gas pipeline project. This information was given in a written reply in the Rajya Sabha today by the Minister for Petroleum and Natural Gas, Mr S Jaipal Reddy. He said various important issues like pricing of gas, delivery point of gas, project structure, payment of transportation tariff and transit fees for passage of natural gas through Pakistan, security of supply etc are under discussion amongst the participating countries.