Hey followers
I have this problem:
I have leased 25 cars to a Turkish company. The contract was sealed under the jurisdiction of Turkish law.
Now this company is not paying me, claiming that they themselves have not been paid by a third company.
What can I do to get my money?
Which laws / regulations are apropriate?
And in General: Are the rules of trade law or the rules of civil law applicable?

It be also helpfull if you could drop some of the actual §§.

I am thankfull for any usefull answer ;-)