Russia and Pakistan are going to sign a technical contract soon to proceed with the $2.5 billion Karachi-Lahore energy pipeline project, said a top diplomat here at Russian Consulate. Also, the two countries have engaged each other on the defence front with Pakistan having finalised a multimillion dollars deal with Russia for the purchase of four MI-35 helicopters. The combat helicopters would be used by Pakistan Army in its ongoing anti-terrorist operations named as Zarb-i-Azb. "Russian Representative on Afghan Affairs has said (reportedly) that we have been exchanging information but Taliban went in denial," the Consul General told a press briefing here while summing up developments involving Pakistan and Russian during the "eventful" 2015. A "big shift", Oleg said, had taken place in Russio-Pakistan trade and economic ties since October when the two sides signed in Islamabad an "Intergovernmental Agreement" (IA) which envisages Moscow to invest around $2 billion in building an 1100 kilometers long LNG pipeline from Karachi to Lahore. It would be so far the largest investment Russia has made in the energy-starved Pakistan which has been weighing different options for a potential LNG import deal with the world's second largest producer of the Liquefied Natural Gas. "This energy pipeline project would be a landmark," the Consul General said adding after the IA between the two countries was due, tentatively in February- March, to ink a technical contract to pave the way for the implementation of the LNG pipeline venture. Prime Minister Nawaz Sharif has invited Russian President Vladimir Putin for the groundbreaking of the project which would complete by 2020.