Hi Fikret, and welcome to SaleHoo,
If you are Drop Shipping products, a US address wouldn't be of any value to you as the Drop Ship supplier would be shipping to your customers direct. If you were buying wholesale from a US supplier, then they should also ship direct to you internationally.
In the event that you want to deal with a US supplier that won't ship for what ever reason, you can use freight forwarding companies as an option. I won't recommend anyone in particular, however if this is an option you are interested in, I would suggest just doing a Google search for freight forwarders in the USA, you will find plenty of options there to consider.
If you are only talking small amounts, perhaps you could build a small business relationship with one of our US based members who would be happy to assist you.