Deductions & credits

Hello,

Anybody can help?

I am a US citizen.  I have to report  social security payments from Poland. This payment are subjected to a 14% tax in Poland.  I believe i can claim a  foreign tax credit since there is an agreement between two countries eliminating double taxation.  

I cannot report it on form 4852  because of the lack of recognizable  TIN . Additionally, I did not know how to report the tax paid (i tried to report taxes  as a  federal tax withheld, which may have been wrong)

The second option, i think,  is to report the payments on 1099 -MISC as the interest payment  and claim the foreign tax credit on form 1116 .
 Thanks. Mike