Russian President Vladimir Putin made New Delhi revisit its days of non-alignment, on his visit last week. His visit aimed at selling S-400 air defence systems worth USD 5 billion. New Delhi signed the contract to buy these in its national interest, and to re-assert the independence in pursuing her foreign policy. As United States is threatening sanctions against those buying defence equipments from Russia under CAATSA (Countering America’s Adversaries Through Sanctions Act), New Delhi expects the US to provide the presidential waiver in its defence transactions with Russia - writes Dr. D.K. Giri (Prof. International Politics, JMI) in the comment India harking back to past.