The theft was committed on U.S. soil. The buyer, even though he would be coming from Russia, could hire a FL attorney to look into it and get a court proceedings going without having to come over here. $14K is grand theft if the buyer can prove it. If it were me, I would sue for everything it cost me to battle it as well. Once court proceedings were over, he could fly over here, get an escort and go collect his settlement....because there is without a doubt that Tom would settle rather than fight this.
In this case, he could settle with giving the buyer the owed animals OR possible animals of equal value that would be easy to sell, such as albino iguanas...etc in addition to having to pay the court and attorney's fees. Tom has a legit business going, therefore his wages/income could be garnished. If he has a bank account even better. Tom has more animals there than he can sell (he pilfers...and pilfers...etc). Maybe out of spite and stupidity he would attempt to fight it, though he honestly (if the above statements are correct) doesn't have a leg to stand on. The judge would rule in favor of the buyer.
So, yes...you could just show up and collect your animals after you went through the judicial red tape so-to-speak, and yes you'd have to have an escort.
The problem here is, you'd have to really want to nail him. You'd have to pay for the attorney up front. Judging by Tom's past, as long as you can prove the theft you would win your case quickly which would help save some money. There IS something that can be done here. This guy is not left high and dry, he just has to want to proceed to the next step, which is getting a U.S. attorney...
Give that some thought....