New Delhi, Dec. 3 -- The rupee breached 90 to the US dollar on Wednesday, marking a new low for India's currency, which has steadily weakened over the year and is now the worst performer among major emerging- and advanced-market currencies.

The rupee's slide (it has fallen more than 5.5% this year as of 2 December) has been driven largely by a trade impasse with the US and continuing foreign portfolio investor (FPI) outflows from Indian markets.







It has been the worst-performing major currency this year, especially since the US slapped additional tariffs on India, leading to a 1.64% month-on-month depreciation against the dollar in August. The speed of its decline nearly halved to around 0.85% in September thanks to the Reserve Ban...