Arussian citizen has illegally obtained a siberian tiger and is trying to sell the tiger’s fur in the united states. what treaty does this violate?

CITES Convention on International Trade in Endangered Species. 
This treaty, officially in place in 1975, prevents the trade of illegal and endangered species overseas. The treaty covers the sale of wild animals and plants and aims to protect species from a trade that results in a threat to their survival. There is currently 181 parties within the agreement, including the United States.

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One reason is animal teeth are in an extraordinary structure.another reason is animal teeth are creative