TIME's Dean Fischersays the fate of President Clinton's veto today of a Congressional bill that would have lifted theBosnian arms embargois tied closely to events in the Balkans. Although Senate Minority Leader Tom Daschle (D-S.D.) today said he believed Democrats had enough votes to sustain a Clinton veto when the Senate resumes Sept. 5, Fischer believes all that could change if the war expands in the next few weeks. "If things collapse over there, if the war widens, you may see even more Democrats vote for lifting the embargo." Besides Congress, Fischer notes, the White House faces deadline pressure from British and French officials, who have told the U.S. that they have to make a decision whether to withdrawtheir troops from the U.N. forceby early fall -- making National Security Adviser Anthony Lake's diplomatic mission even more crucial.