The final details included agreements to preserve safe passage for each side through territory controlled by the other in the delicate jigsaw puzzle forged in Dayton. Muslims and Croats, for example, are assured a safe corridor through Serbian territory from Sarajevo to the Muslim city of Goradze. Serbs won protection on the Posavina corridor, which connects a Serb area in western Bosnia with the main Serb territory in the east to a passage through what will now be Muslim-Croat territory. "It looks as if the crucial event was President Clinton's call to Croatian President Franjo Tudjman yesterday," says Graff. "That might have convinced the Croats to switch sides on the Posavina corridor issue. That will not make the Bosnian Muslims and Croats happy, since the Posavina corridor divides two parts of Bosnian territory which they would rather see united, but they got a major concession in a unified Sarajevo." Graff says that what happens on Capitol Hill over the next two weeks will be crucial. "I wouldn't be surprised if Clinton tries to get Tudjman, Milosevic and Izetbegovic to go to the Hill to reassure Congress that there's not going to be violence. If, however, the Bosnians, for example, go to Congress and say they were dragged into this accord, it's not going to help."