At the risk of boring the pants of you all, the current members of the Joint Airworthiness Authorities are: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Former Yugoslav Republic of Macedonia, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Luxembourg, Malta, Moldova, Monaco, Netherlands, Norway, Poland, Portugal, Romania, Slovak Republic, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
In theory, all these nations should accept any other JAA licence. This does not mean they will accept another national licence. Ie a UK ATPL is not a JAA licence and therefore not acceptable "as is" in say Sweden or Germany. When you come to renew it you will be given a JAA licence which is acceptable in those and presumably all JAA nations. New issue licences are JAA compliant.
Yawn