Every day there are news stories from various countries around the world about bomb threats phoned in by various perpetrators. Sometimes it's school kids who want to skip a day in class, sometimes it's a bored prankster, sometimes it's an organized group set on spreading chaos by shutting down important public locations. But what all bomb threats have in common is that nearly 100% of them are fake. Outside of very specific cases such as the IRA's conflict with the UK government no bombs are ever found and no lives are ever saved.
But are there countries which have a policy of ignoring all bomb threats? Some countries have a policy of refusing to pay ransoms or negotiating with terrorists, so it makes sense for someone to go even further.