<div>Stocks in Cairn India surged as much as 5 per cent after the oil explorer said its board would meet on 19 November to consider a proposal to buy back shares.</div><br /><div>Shares also gained as Brent crude jumped $2 to end at its highest in more than a month on 21 November, fuelled by a sharp run-up in gasoline and gas oil prices on news of dwindling stocks and refinery glitches in the United States and Europe.</div><br /><div>Higher crude oil prices help increase realisations at oil exploration firms such as Cairn India, which sells crude in dollars. The rupee also weakened, heading for a third consecutive session of falls against the dollar.</div><br /><div> (Reuters)</div>