David Cameron has pulled back from the brink. A month ago, the UK prime minister was close to advocating quotas on migrants from the European Union. Such a policy would have been undeliverable. It would have meant flouting one of the EU’s core principles – the free movement of people. If Cameron had made such a pledge and failed to deliver it, he would have had to campaign to pull Britain out of the EU in the referendum he wants to hold by the end of 2017. The people could have followed the prime minister’s lead, and the British economy would have been badly damaged, if only because business would have lost full ... (full story)