Switzerland — one of the most heavily armed countries in Europe — voted to comply with stricter European Union gun laws in a referendum Sunday. While Switzerland doesn't belong to the EU, it is part of the bloc's Schengen Area which is a zone that can be visited without a visa or passport by citizens of 26 European nations. Following terrorist gun attacks in Paris and Brussels in 2015 and 2016, the EU tightened gun rules, known as the "EU Gun Ban", the bloc... (GunPolicy.org)