a. 如果说是他自动放弃中国籍，那么，他拿着中国护照进入乌茨别克之前，他已经加入了加国国籍，中国政府就应当视他已经放弃了中国国籍。那么他已经不再是中国公民。他使用中国护照进入乌茨别克是使用了非法无效的中国护照----即，他使用了假护照。乌茨别克应当视他为非中国人的偷渡客，应当送他回他的国籍国。在这种情形下，中国政府不应当接受乌茨别克把他遣送到中国。
b. 如果说是他自动放弃中国籍，那么，如果说他是恐怖分子，援引美国对待他国国籍恐怖分子的做法，即使他不是美国人，也可以逮捕押送到美国或第三国，那么乌茨别克把他逮捕并把他遣送到中国也是有美国制造的国际案例可源的----案例法吗，是西方司法的基础。有样学样，那么中国也可以对他进行司法管辖。何况中国一再说他是中国的外逃通缉犯。
c. 如果说,不是"加入了加国/外国国籍之后，其中国国籍是否就自动放弃"，那么他就匀皇侵泄??瘛Ｋ?褂弥泄?ふ战?胛诖谋鹂耸鞘褂昧擞行У闹泄?ふ铡Ｎ诖谋鹂耸铀??泄?耍?阉?突刂泄?秃侠砦抟伞Ｔ谡庵智樾蜗拢?泄???比灰?邮芪诖谋鹂说那菜汀Ｖ泄?痉ǘ运?芯?缘乃痉ü芟饺āＴ谡庵智榭鱿拢?泄?痉ǖ娜魏位疃?疾恍枰?ㄖ?庸?＜庸?娜魏闻?谰褪浅嗦懵愕母缮嫠??痉ǘ懒ⅰＵ夂屠挡?遣煌??凳浅钟兄泄?行?无效护照的中国公民而进入加国的，中国有权要求加国知会一切。
Dual citizenship occurs when a person is the citizen of more than one country. Canadian law permits this: you can remain or become a citizen of another country and still be recognized as a Canadian.
But dual citizenship (also called dual nationality) is not legally recognized in all countries. This can lead to serious difficulties for Canadians when they are in the country of their second citizenship. It can also create problems in third countries if there is any confusion over what citizenship was used to obtain entry.
There are also risks and problems associated with having more than one citizenship.
A Canadian from Toronto went to Italy with his Italian-born parents. He was informed by the Italian authorities that he was considered an Italian citizen and would be required to perform military service. He had to have family members in Toronto obtain certain documents and then have them certified by the Italian consulate before he was allowed to leave Italy.
Recognition of Canadian citizenship: The most important of these is that your Canadian citizenship may not be recognized in the country of your second citizenship. The authorities of that country may not recognize Canada's right to provide you with consular assistance.
There could also be problems in other countries, especially if you used the travel document of the country of your second citizenship to gain entry. In such circumstances, the local authorities could decide that Canada does not have the right to provide consular assistance.
Military service: Many countries still have compulsory military service. If you are a citizen, and you meet other conditions, you may be legally required to register for military service and to respond to call-up orders. This legal obligation may exist even if you do not reside in the country of your second citizenship. Your obligations could be enforced even if you're just visiting at some point in the future.
Some countries do not accept ignorance as an excuse for failure to comply. The consequences could be imprisonment or immediate induction into military service the next time you arrive in the country or attempt to leave. Even dual citizens who have passed the age for military service may be considered defaulters for failing to report at the required time.
Travel: If you travel with two passports, you could be subject to increased scrutiny by immigration and security officials. You could be questioned about missing entry or exit stamps, as well as your reason for having two travel documents. In some countries, possession of a second passport could result in its confiscation or a fine. You may even be prevented from leaving the country.
