New Delhi, Oct. 10 -- US President Donald Trump's decision to allow Russian diesel supplies to global markets has raised questions about how the move fits with a new law empowering him to impose tariffs of up to 100% on major purchasers of Russian oil and gas.

Trump announced the diesel agreement with Russian President Vladimir Putin on Friday, claiming it would swiftly bring down record-high diesel prices. The announcement came just three weeks after he signed the Lindsey O. Graham Sanctioning Russia and Iran Act of 2026 into law.

The legislation empowers Trump to impose tariffs of up to 100% on major buyers of Russian crude oil or gas, among other restrictions. However, the latest diesel arrangement has prompted criticism that Washing...