Do you need a copy of Battlefield 2 to play mods?

Do you need a copy of Battlefield 2 to play mods like Operation Peace Keeper(OPK),Allied Intended Extend(AIX) and Project Reality(PR)...Or you simply need a downloaded one from torrents?Do you need a copy of Battlefield 2 to play mods?
Well duh, of course you need the game! Otherwise you dont have the files to make the mod work. i repeat, without the copy it will not work, there no way to get any mods to run without a copy of bf2.