The Indian rupee experienced a decline against the US dollar amid concerns over additional tariffs announced by former President Donald Trump targeting BRICS nations. The rupee opened at 85.57 per dollar, down from the previous close of 85.39, and continued to weaken throughout the day, reaching levels above 86 per dollar at one point. The currency fell as much as 61 paise during intraday trading and closed 47 paise lower at 85.86. Market observers attributed the selloff to uncertainty surrounding India-US trade relations and the impact of Trump's tariff threats on BRICS countries, marking the rupee's worst decline in three weeks.