As the owner of a spectacular cliff-top castle, billionaire Christoph Blocher knows all about how previous generations of Swiss deterred unwanted visitors. Yet six centuries on from the building of Schloss Rhäzüns, the towering mediaeval home where he lives in eastern Switzerland, his tactics for fending off foreign invaders have evolved somewhat.

http://www.telegraph.co.uk/news/worldnews/europe/switzerland/10640630/Follow-Switzerland-and-vote-No-to-EU-migration-billionaire-Christoph-Blocher-urges-Britain.html