Republicans moved against President Clinton'sforeign policy in Bosniatoday. Senate Republican leader Bob Dole introduced a bill to lift the arms embargo against the Bosnians -- a measure that, if passed, will likely endanger international efforts to bring peace to the region. Dole has long said that he wished the U.S. would unilaterally lift the embargo, so that Muslims could arm themselves against the Serbs' aggression. However, observers have warned that lifting the embargo would have the effect of destroying the on-again, off-again truce that currently exists and encourage the Serbs to start mass killings again. The United Nations has also said that it would withdraw peacekeeping troops -- who would become sitting ducks in the aggression -- if the U.S. lifts the embargo.