Downing Street has dismissed claims David Cameron has abandoned plans for a Commons vote on air strikes against Islamic State militants(IS) in Syria. It follows reports in The Times and The Guardian that the Prime Minister has decided against a second vote on the issue because he lacked MPs' support. The government was defeated in a 2013 parliamentary vote on Syria - although MPs later approved air strikes in Iraq. A Downing Street source told the BBC the reports were "complete nonsense". It comes as a Commons committee warned that Britain should not take part in air strikes in Syria until the government presents a "coherent international strategy" to defeat IS and end the country's civil war. The Foreign Affairs Committee said it was "not yet persuaded" ministers could address its concerns.