Stock markets fell across the globe, on Monday. At home, snapping three days of gains, the Sensex at the Bombay Stock Exchange lost 190 points, or 0.6 percent, to close at 31,702. The Nifty at the National Stock Exchange declined 62 points, to 9,913. Stocks fell in line with sliding global bourses, on escalating geopolitical tensions, after North Korea said it had tested a hydrogen bomb.