Jean-Claude Juncker

UK prime minister seeks post-Brexit EU security alliance

British Prime Minister Theresa May urged her country's European Union partners on Saturday not to let "rigid institutional restrictions" get in the way of a wide-ranging post-Brexit security alliance, warning that there would be "damaging real-world consequences" if none can be agreed.

In a speech to the Munich Security Conference, May sought to reassure foreign and security policy leaders on Britain's future commitment to European security.

"Europe's security is our security — and that is why I've said, and I say again today, that the United Kingdom is unconditionally committed to maintaining it," she said.

The British government has...