... neither shall they learn war any more. -- Isaiah
Outside of the U.N. Building in New York City, there is a powerful depiction of Isaiah's vision of humanity beating their swords into plowshares under a coming (at least from Isaiah's perspective) godly rule.
Ironically, this statue was given to the U.N. by the Soviet Union, a Cold War jab at the fact that the world's "Christian" nation was leading the nuclear arms race.