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Canada w/ Double Tax Treaties

Hi all, can anyone say why its beneficial to live in a country with a DTA as originally from Canada, wihtout mention of double taxation itself? Like, if I live in Panama for example, and Canada sees this on my non resident returns (I own Canadian real estate), could they easily just deem me as Canadian tax resident because I live in a country that has no treaty? I would love to live in some of these non treaty countries with territorial or no tax but I am scared then I am defenceless against Canada if they try to claw money from me because there is no treaty governing wehether I am a tax resident of Canada OR that country