The United Kingdom will oppose any attempts to create an EU army because it could undermine the role of Nato, Defence Secretary Sir Michael Fallon said. NATO must remain the cornerstone of UK defence and the defence of Europe, he said, ahead of informal talks with EU Defence Ministers in Bratislava. <br/><br/>Sir Michael said the UK was not alone in opposing a common EU defence policy. European Parliament President Martin Schulz has said the UK would not have a veto over closer defence co-operation. France and Germany are set to make the case for increased military co-operation at the informal meeting in the Slovakian capital later.<br/><br/>Speaking in Bratislava, Sir Michael said the UK remains committed to Europe's security despite the vote to leave the EU, and said the bloc needs to step up to the challenges of terrorism and migration. But UK is going to continue to oppose any idea of an EU army, or an EU army headquarters which would simply undermine Nato.<br/><br/>The North Atlantic Treaty Organisation (Nato) is an international military alliance comprised of 28 members, including the UK, US, Germany, Canada and Turkey. It was set up after the end of the second world war in 1949.