Keep calm and sign another treaty. This seems increasingly to be Europe's security doctrine in a new era of strategic uncertainty, in which governments no longer proceed from the premise that old security guarantees, alliances and institutions will automatically remain in force, comments TVPWorld. Britain and Poland signed on Wednesday, at RAF Northolt base in west London, the new Treaty on Defence and Security Cooperation between Britain and Poland, which is just the latest addition to a rapidly growing network of military agreements that is spreading across the entire continent.