Barack Obama: The world needs a united EU

In comments which are likely be seen as a further plea for a Remain vote in Britain’s June 23 referendum, Mr Obama hailed the EU as “one of the greatest political and economic achievements of modern times” and cautioned individual states against rebuilding barriers which existed in the 20th century.
Mr Obama’s intervention, in a speech in Germany, came as Brexit’s biggest hitters sought to seize back the referendum initiative by putting immigration at the top of the agenda.