U.S. President Donald Trump's India tariffs have shown Moscow's allies that he will follow through with his threat to impose secondary tariffs on countries that purchase Russian oil, though doubts remain about the practicalities of implementing them,

President Donald Trump’s move to penalise India for buying oil and arms from Russia will increase economic risks for the South Asian nation and test its longstanding ties

Trump teased the tariffs on India on Tuesday despite characterizing Indian Prime Minister Narendra Modi as a good friend.