North Korea has revised its constitution to define its territory as bordering South Korea and remove references to reunification, according to a draft text reviewed by Reuters. This move codifies leader Kim Jong Un’s push to treat the two Koreas as separate states. Believed adopted at a March meeting of the Supreme People's Assembly, its legislature, this marks the first time North Korea has added a territorial clause, a Seoul National University professor noted. The new Article 2 defines North Korea’s territory as including land "bordering the People’s Republic of China and the Russian Federation to the north and the Republic of Korea to the south," plus territorial waters and airspace, asserting it "will never tolerate any infringement" of its territory. However, the clause does not specify its border with South Korea or explicitly mention disputed maritime boundaries, such as the Northern Limit Line in the Yellow Sea.…