Divya Delhi: Trump has hinted that nations who continue to purchase Russian crude oil may be exempt from comparable secondary duties.Trump said on Friday that Washington's announcement of a penalty on New Delhi's oil purchases caused Russia to lose India as a client. But he did hint that nations who continue to purchase Russian crude oil would be exempt from comparable secondary levies.While Trump made his remarks, New Delhi still hasn't said anything about cutting oil imports from Moscow. This is despite Washington's decision last month to impose 25% tariffs on Indian exports, on top of the existing 25% levy. August 27 is when the new tax is supposed to go into force.Apparently, Russian President Vladimir Putin lost a client in the oil business; namely, India, which was responsible for almost 40% of Russia's oil exports. China is doing a lot, as you are well aware.What they term a secondary tariff or sanction would be disastrous to them if I were to implement it. No problem, I'll get it done if I have to. Trump said Fox News, "Maybe I won't have to do it," just before leaving for Alaska to meet with Russian President Vladimir Putin, a meeting that is potentially very important.