<span style="color: #222222;">The leaders of the rival Koreas exchanged letters expressing hope for improved bilateral relations. North Korea's state media said leader Kim Jong Un on Wednesday received a personal letter from outgoing South Korean President Moon Jae-in and replied yesterday with his own letter appreciating Moon's peace efforts during his term. <br />''<br />''Pyongyang's official Korean Central News Agency said today their exchange of letters showed their "deep trust." Moon in his letter to Kim acknowledged setbacks in inter-Korean relations but insisted that their aspirational vows for peace during their summits in 2018 and an accompanying military agreement aimed at defusing border area clashes remain relevant as a foundation for future cooperation.</span><br />