India, Aug. 6 -- National Security Adviser Ajit Doval and external affairs minister S Jaishankar are set to visit Russia this month for meetings with top Russian officials aimed at bolstering security, economic and energy ties against the backdrop of US threats of punitive tariffs over trade between New Delhi and Moscow.

Doval will travel to Moscow on Wednesday for meetings with senior Russian officials on Thursday, according to people familiar with the matter, who spoke on condition of anonymity. The trip, which was previously scheduled, has gained significance due to US President Donald Trump's warning this week that he will "very substantially" increase the 25% tariff imposed on India for purchasing Russian oil.

The visit has not bee...