Event:
Russian President Vladimir Putin says that he and Ukrainian President Petro Poroshenko have agreed to a peace plan that would retain rebel control of parts of eastern Ukraine; the two presidents hope to continue negotiations on Friday
More Notable Events on September 3: 1984 South Africa adopts constitution
1978 Pope John Paul I officially installed as 264th supreme pontiff
1976 Viking 2 soft lands on Mars and returns photos
1971 John Lennon leaves U.K. for New York City, never to return
1964 U.S. attorney general Robert Kennedy resigns
