Representatives of Balkan nations that benefited from the 30-year-old Dayton Peace Accords joined Americans of both political parties on Friday to affirm the value of NATO to maintaining peace around the world. U.S. Ambassador to NATO Matthew Whitaker told a public forum at the University of Dayton held in conjunction with the NATO Parliamentary Assembly being held this week in the Ohio city that there's “no doubt” that the U.S., as the world's leading superpower, will be challenged in the future and it's “going to need friends.”