Global school security measures vary, but no arming teachers

The United States is in the midst of a national debate over school security after the mass shooting at a Florida school.

To President Donald Trump and some gun supporters, the solution is to put more guns in the hands of trained school staff — including teachers — to "play defense" against a rampaging gunman.

The rest of the world has different strategies to deal with violence around schools. But the U.S. appears to be the only place in the world where some want to arm teachers to the degree the president wants.

Rather, emergency drills, armed guards patrolling school campuses and intruder dri...