Who needs counter-terrorism?
ISIS, at least, can celebrate the triggering of Brexit with something to look forward to:
www.theguardian.com/politics/2017/mar/29/brexit-eu-condemns-mays-blackmail-over-security-cooperation
So no trade deal, no counter-terrorism cooperation.
Of course, terrorists are never British so keeping out all those pesky eu 'forriners' will solve the problem of terrorism. 