Why Brexit may be good for terrorists and the Kremlin

Britons who voted to split from the European Union didn’t make their choice because they wanted to make it easier for terrorists and smugglers to move across the English Channel.

Nor did they advocate for weakening sanctions against Russia. Or to have less money to spend on their military.

But policymakers and analysts worry that security is about to take a hit when Britain departs the E.U. on March 29, even under the most harmonious of divorce scenarios.

“What the U.K. is going to do on security is to minimize the damage,” said Malcolm Chalmers of the Royal United Services Institute, a London security and defense think tank.