He led a team of Americans in shuttle diplomacy towards the end of the war, and was most responsible for convincing the warring parties to sign the peace agreement at Dayton, Ohio, in November 1995.
On je predvodio američki tim u «letećoj diplomatiji» pred kraj rata i bio je najzasluzniji što su zaraćene strane potpisale mirovni sporazum u Dejtonu, u američkoj državi Ohajo, u novembru 1995.