The leader of the Scottish National Party has pledged to fight to keep Britain in the European Union, as pressure mounts on the British government to clarify its stance on the issue.
Nicola Sturgeon told SNP party members that "David Cameron might play fast and loose with our place in Europe. Be in no doubt - the SNP will campaign positively for Scotland, and the UK, to stay in the European Union.
"We despair at the failure of leadership of a prime minister pandering to eurosceptics in his party, but unable to articulate clearly and precisely what it is he is seeking to renegotiate," she added, speaking at her party’s conference in Aberdeen.
Prime Minister Cameron has promised to hold a referendum on EU membership by the end of 2017, but both his pro-EU allies and eurosceptics within his ruling Conservative Party are growing impatient.
Mr Cameron plans to renegotiate the terms of Britain's membership of the 28-member-bloc, but says he cannot guarantee he will get what he wants and has not ruled out campaigning for a British exit.
Critics say he has not been clear about his demands, which he says include more powers for London and the ability to opt out of closer EU political integration.
Should a British exit from the EU appear likely, the SNP's opposition to the move could precipitate renewed calls for another vote on Scottish secession, following a referendum in September last year that saw 55% of Scots vote to stay within the UK.
The SNP, the British parliament's third-largest bloc and an advocate of Scottish independence, sees the EU as an important trading partner and wants Scotland to have a "louder voice" in Europe.
Speaking to some 3,500 conference delegates amid regular bouts of huge applause, Ms Sturgeon also pledged to oppose government plans for British air strikes in Syria.
"What is needed is not more bombing but a renewed and intensive diplomatic initiative, led by the UN, to seek a lasting resolution of the conflict," she said.
Mr Cameron is seeking cross-party support for British air strikes in Syria to fight the Islamic State group.
Ms Sturgeon's speech concluded the three-day SNP party conference, where members planned for Scottish Parliament elections expected in May next year.
