Poland in 1968, and ruled that the Polish government erred in revoking the plaintiff's citizenship, and should restore it, and issue him a Polish passport. During a 2006 visit to Israel, President Lech Kaczyński promised to restore Polish citizenship. No blanket legislation covering the issue exists, but when applying for the confirmation of their Polish citizenship, these Jews and their offspring will usually get a positive result in the first instance or the second one, in an appeal to the ministry of interior. Jews and Israelis who were invited to Warsaw to mark the 40th anniversary of Poland's purging of the Jews on March 8, 1968, will be given back the Polish citizenship. Loss criteria The issue of losing one's citizenship before 1962 is complex, and the different principles of the law governing it are the following: A person born before the 1951 law entered into force may inherit only the Polish citizenship of their father if their parents were married, or their mother-otherwise. A person who joined a foreign army (even if never served but was only conscripted on paper), worked in a public job in a foreign country (very wide and volatile definition for that but this includes: teacher, religious leader, postman and even in a territory not defined as a country like British Palestine ) or received any foreign citizenship prior to the entry into force of the law of 1951 – loses their citizenship immediately, and if a married man, also his wife and minor children (younger than 18) lose their citizenship. Nevertheless, if they were not exempt from Polish army duty then only getting foreign citizenship will not revoke their Polish one. Public work and army register will always cause the loss of citizenship. Therefore, an adult unmarried woman has lost her citizenship on obtaining foreign citizenship before 1951, because they had no military duty in Poland. Married women stayed under the "protection" of their husband's citizenship and kept it as long as the husband didn't lose it. On the other hand, in the case of men there are two conditions which need to prevail: men who both got foreign citizenship and passed the age of Polish military duty (50 since the law changed on May 29, 1950) had lost their citizenship. A person who obtained a foreign citizenship (non Polish) due to the changes of the borders after WWII, or had Russian, Ukrainian, Belarusian,