>I don't see what NK would gain from "nuking Guam," besides the end of their country.
Guam appears to be an internet hub for a few relatively important lines.
"The SEA-US cable system will link the five areas and territories of Manado in Indonesia, Davao in Southern Philippines; Piti in the territory of Guam; as well as Honolulu (on the island of Oahu), Hawaii; and Los Angeles, California in the continental U.S." [1]