As your friend, let me say that the EU makes Britain even greater

In 1939, President Franklin D Roosevelt offered a toast to King George VI in the White House. “I am persuaded that the greatest single contribution our two countries have been enabled to make to civilisation, and to the welfare of peoples throughout the world,” he said, “is the example we have jointly set by our manner of conducting relations between our two nations.”

Nearly 80 years later, the United Kingdom remains a friend and ally to the United States like no other. Our special relationship was forged as we spilt blood together on the battlefield. It was fortified as we built and sustained the architecture for advancing stability and prosperity in Europe, and our democratic values around the globe. From the ashes of war, those who came before us had the foresight to create the international institutions and initiatives to sustain a prosperous peace: the United Nations and Nato; Bretton Woods, the Marshall Plan, and the European Union.

[Snipped some more boilerplate about the special relationship]

I realise that there’s been considerable speculation – and some controversy – about the timing of my visit. And I confess: I do want to wish Her Majesty a happy birthday in person.

But also I understand that there’s a spirited campaign under way here. My country is going through much the same. And ultimately, the question of whether or not the UK remains a part of the EU is a matter for British voters to decide for yourselves.

That said, when President Roosevelt toasted to our special relationship that night, he also remarked that we are friends who have no fear of each other. So I will say, with the candour of a friend, that the outcome of your decision is a matter of deep interest to the United States.

[Snipped some more appeals to sentimentality]

The European Union doesn’t moderate British influence – it magnifies it. A strong Europe is not a threat to Britain’s global leadership; it enhances Britain’s global leadership. The United States sees how your powerful voice in Europe ensures that Europe takes a strong stance in the world, and keeps the EU open, outward looking, and closely linked to its allies on the other side of the Atlantic. So the US and the world need your outsized influence to continue – including within Europe.

In this complicated, connected world, the challenges facing the EU – migration, economic inequality, the threats of terrorism and climate change – are the same challenges facing the United States and other nations. And in today’s world, even as we all cherish our sovereignty, the nations who wield their influence most effectively are the nations that do it through the collective action that today’s challenges demand.

When we negotiated the historic deal to verifiably prevent Iran from developing a nuclear weapon, it was collective action, working together with the permanent members of the UN Security Council and Germany, that got the job done. And the EU’s seat at the table magnified the United Kingdom’s voice.

When the climate agreement in Paris needed a push, it was the European Union, fortified by the United Kingdom, that ultimately helped make that agreement possible.

When it comes to creating jobs, trade, and economic growth in line with our values, the UK has benefited from its membership in the EU – inside a single market that provides enormous opportunities for the British people. And the Transatlantic Trade and Investment Partnership with the EU will advance our values and our interests, and establish the high-standard, pro-worker rules for trade and commerce in the 21st century economy.

This kind of cooperation – from intelligence sharing and counterterrorism to forging agreements to create jobs and economic growth – will be far more effective if it extends across Europe. Now is a time for friends and allies to stick together.

Together, the United States, the United Kingdom, and the European Union have turned centuries of war in Europe into decades of peace, and worked as one to make this world a safer, better place. What a remarkable legacy that is. And what a remarkable legacy we will leave when, together, we meet the challenges of this young century as well.