North and South Korea
According to official communist strategy, communists never abandon their end goal of total world domination. They will, however, seek to establish peaceful relations to lure free nations into dropping their guard. South Korea seems to understand this, as it is willing to move forward in establishing peaceful relations with North Korea but desires that the US maintains military presence and protection regardless of any future peace treaty they sign.
Some are speculating that the sudden peace talks are due to the potential collapse of a major nuclear test site in North Korea which might cause them to abandon aggressive military activities. Others contest that this wouldn’t deter them.