New Delhi, Feb. 3 -- A late call India time on Monday between Indian Prime Minister Narendra Modi and US President Donald Trump sealed the trade deal. Details are still sketchy but according to social media posts by the leaders, the US will reduce the reciprocal tariffs from 25% to 18%. The 25% punitive tariff that was levied for India's Russian oil purchase is also to go-effectively reducing US tariff on India's exports from 50% to 18%. Lower than tariffs on countries such as Vietnam, this puts Indian exports at an advantage.

That's the good news.

But several questions remain unanswered. Here are six of them:

Trump in his social media post has claimed that India has agreed to end Russian oil purchases. But Modi's statement does not me...