The Prime Minister will propose a unique new UK-EU treaty on security and urge Europe’s leaders to show “real political will” to protect and enhance existing cooperation after Brexit.
At an international security summit in Munich, Germany on Saturday, she will spell out the huge contribution the UK currently makes as part of European security in terms of helping to foil terror plots, smash human trafficking rings and combat serious and organised crime.
Europe must not let “rigid institutional restrictions” on working with a non-member state or “deep-seated ideology” undermine existing cooperation, she will declare.
“Europe’s security is our security.
“And that is why I have said that the United Kingdom is unconditionally committed to maintaining it,” she will tell her audience.
“This cannot be a time when any of us allow competition between partners, rigid institutional restrictions or deep-seated ideology to inhibit our co-operation and jeopardise the security of our citizens.
“If the priority in the negotiations becomes avoiding any kind of new co-operation with a country outside the EU, then this political doctrine and ideology will have damaging real world consequences for the security of all our people, in the UK and the EU.
“As leaders, we cannot let that happen.”
Calling for unity, she will add: “Those who threaten our security would like nothing more than to see us fractured.
“They would like nothing more than to see us put debates about mechanisms and means ahead of doing what is most practical and effective in keeping our people safe.
“So let our message ring out loud and clear today: we will not let that happen.
“We will keep our people safe, now and in the years to come.
“Nothing must get in the way of our helping each other in every hour of every day to keep our people safe.
“If we put this at the heart of our mission – we can and will find the means.’
Today in Berlin she also stressed that a future security treaty must be dynamic and agile so that countries can adapt to evolving threats.
She may on Saturday alarm British eurosceptics who oppose the European Arrest Warrant by arguing against anything that makes it harder to extradite terror suspects.
But it is understood she will argue that any post-Brexit decisions to extradite suspects to other European countries will have to be agreed by Britain’s own Supreme Court, not EU judges.