EU referendum: Cameron warns UK exit could put peace at risk

Peace in Europe could be at risk if Britain votes to leave the European Union, David Cameron has warned.The UK has regretted “turning its back” on Europe in the past, the PM said, arguing the European Union has “helped reconcile” countries and maintain peace.
Mr Cameron asked if leaving the union is a “risk worth taking”.
Meanwhile, Boris Johnson, who wants the UK to leave the EU, will make a speech on the “cosmopolitan case for Brexit”.
There are just over six weeks to go until the 23 June referendum which will decide whether Britain remains in or leaves the EU.