Indian stocks have had a good run. Since the end of March 2020, the Nifty 50, one of India’s main equity gauges, has risen almost 190 per cent. It has outperformed the benchmark S&P 500 index, which itself is up more than 150 per cent.Yet in the past year, the ferocious rally has given way to volatility, concerns over lofty valuations and worries about growth and corporate earnings. The unexpected decision earlier this month by US President Donald Trump to impose swingeing tariffs of 50 per...