Washington DC, Aug. 9 -- India remains a key strategic partner for the United States, the US State Department emphasised on Thursday amid mounting tensions between New Delhi and Washington. The department's principal deputy spokesperson Tommy Pigott told reporters that America would pursue a "full and frank" dialogue with India. "What I can say in terms of India is that the President (Donald Trump) has been very clear in terms of the concerns he has regarding the trade imbalance, regarding the concerns he has when it comes to the (Indian) purchase of Russian oil. You have seen him take action directly on that," Pigott said at a press briefing in response to a question about Prime Minister Modi's reported upcoming visit to China for a summit...