Former US Ambassador to India Kenneth "Ken" Juster tells NDTV that India-US relations are back on track despite periodic challenges. In this exclusive interview, he discusses the proposed bilateral trade agreement, growing cooperation in technology, defence, energy and healthcare, Prime Minister Narendra Modi's efforts to improve the business climate, and the possibility of President Donald Trump's return to India. Juster also recalls the memorable "Namaste Trump" event and explains why the partnership remains strategically important.