A Policy Shift On Serbia Tied To a Free Vote
Clinton administration, in move to strengthen opposition to Yugoslav Pres Slobodan Milosevic, will end economic sanctions against Serbia as soon as free election is held; feels new strategy should enable opposition to put more pressure on Milosevic; delegation of Serbian opposition leaders visiting Washington pressed for policy change, arguing that it would allow them to increase popular pressure on Milosevic to call election they are certain they can win; photo (M)