1945 conference site (5)
I believe the answer is:
yalta
'1945 conference site' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for yalta that I've seen before include "Site of WW2 summit" , "Crimean port, scene of nineteen forty five conference" , "Crimean resort city" , "Nineteen forty five conference site" , "City on the Black Sea, where Roosevelt, Stalin and Churchill met in 1945" .)