Nifty slides to six-month low as US-Iran deal hopes fade, oil tops $100 a barrel

Mumbai, Sept. 28 -- Indian stocks fell to their lowest level in almost six months on Monday as hopes of a US-Iran breakthrough faded, pushing crude oil further above $100 a barrel and deepening worries over higher interest rates.The benchmark Nifty 50 tumbled 1.6% to close at 22,780.25, its lowest…