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Every country has no extradition treaties with the.
Ukraine
Australia
Canada
Australia
Taiwan.
Maybe IRAN!!
I think most developed countries have treaties setup with all other countries. These treaties can be for business, bilateral ties, criminal extradition etc.
India maintains extradition treaties with about 30 other countries.
Rather than list the countries that DON'T have extradition treaties with Canada the link below will list all the countries that DO have extradition treaties with Canada.You may compare this list against all the other nations of the world and make your own list.See below link:
Extradition treaties.
Czech republic