India's 10-year bond logs worst day in 3 months on faltering Iran deal

India's 10-year benchmark bond yield jumped 6.8 bps to 6.7636%, its sharpest single-day rise since April 2, as Brent crude surged nearly 6% to $78.31 a barrel following US remarks on a faltering Iran deal. The oil spike dragged the Nifty 50 down 2.12%, weakened the rupee by 0.62% to 95.5550 per dollar, and pushed overnight swap rates to their biggest jump in about seven weeks. Foreign investors remain net buyers of Indian debt at 362 billion rupees since early June, with Bloomberg Global Aggregate Index inclusion seen as a near-term catalyst.