India, Jan. 11 -- The US threat of sanctions will not delay Russia's delivery of S-400 air defence systems to India and the two countries have worked out alternative arrangements for payments, Russian deputy foreign minister Sergey Ryabkov said on Wednesday.

Russia believes India's role in the development of Afghanistan is "indispensible", Ryabkov told a small group of Indian journalists, days after US President Donald Trump mocked India's development aid for the war-torn country.

Moscow has said it won't be pressured by US sanctions under the Countering America's Adversaries Through Sanctions Act (CAATSA) while finalising defence deals with New Delhi. Russian officials have said the first delivery under the $5.4-billion deal for the S-...