Washington DC, July 14 -- A bipartisan group of US senators has unveiled a long-awaited bill imposing sweeping sanctions on Russia, naming India among five countries that could face tariffs for continuing to buy Russian oil.

The legislation, dubbed by some colleagues the "Lindsey Graham Russia Accountability Bill," was formally announced on Capitol Hill on Tuesday by Senators Richard Blumenthal and Jeanne Shaheen, along with Republicans Roger Wicker, Katie Britt and more than a dozen other lawmakers from both parties.

It comes promptly after the death of Senator Lindsey Graham, who spent nearly two years negotiating the measure and whom colleagues repeatedly credited as its driving force.

Senator Blumenthal, the lead Democratic sponsor...