There is a hint in Zechariah 9 that the peace may be shared with other nations, but the swords into plowshares vision is clearly a vision of worldwide peace, of the abolition of war. (religion-online.org)
There have been reactionary times when the past laid its dead hand oppressively upon the present, when all old things were glorified and all new things were hated, when the new iron plowshares were preached against as sacrilegious. (religion-online.org)
A thousand generations since Cain clubbed his brother in some field, and a million cries for peace, for plowshares, say, and what's to show? (firstthings.com)