India has unexpectedly become a key target in Washington's latest push to pressure Russia over the Ukraine war.

On Wednesday, Donald Trump doubled US tariffs on India to 50%, up from 25%, penalising Delhi for purchasing Russian oil - a move India called "unfair" and "unjustified". The tariffs aim to cut Russia's oil revenues and force Putin into a ceasefire. The new rate will come into effect in 21 days, so on 27 August.

This makes India the most heavily taxed US trading partner in Asia and places it alongside Brazil, another nation facing steep US tariffs amid tense relations.

India insists its imports are driven by market factors and vital to its energy security, but the tariffs threaten to hit Indian exports and growth hard.

Almost all of India's $86.5bn [£64.7bn] in annual goods exports to the US stand to become commercially unviable if these rates sustain.