Despite the Reserve Bank of India's recent cap on banks' forex positions, the rupee's initial gains quickly faded, highlighting persistent underlying pressures from rising crude oil prices, geopolitical tensions, and a strong dollar environment.Illustration: Dado Ruvic/ReutersKey PointsThe RBI's cap on banks' net open forex positions, intended to support the rupee, provided only a fleeting boost, with the currency quickly reversing its initial gains.Market participants suggest the directive may have had uni ...