@juham2013 , I understand and sympathize on your frustration. If this foreign pension and the foreign taxation is the only issue, I personally cannot provide you a specific and generally (legally ? correct answer . This is because , even though I deal here mostly with tax treaties, not having looked at the language of the treaty inn question and the technical explanations from both sides , there is no ground for me to stand on. All I can say is that generally, payments made from public funds are usually taxable ONLY in the payor country. Also generally Treaty position declaration form 8833 is not required for individuals in such conditions.
You are always welcome to send me the information via PM ( this is not visible to community in general) . However, you must not provide any PII -- Personally Identifiable Information.
That is the best I can do for you .
pk
