Our allies are clearly South Korea and Japan.  Guam is a US territory.
Trump's buster, it appears, put Guam squarely in the cross hairs.  Openly.  Presumably because Pocho doesn't live in Guam, so NK is not scared of Guam.
And this tough talk clearly implicates warfare in the South Korean and Japan homeland regions.  There, Pocho's lack of presence in either place apparently makes their populations fungible for the President's purposes.
Cannot risk vociferous supporter Pocho.  But. . . .South Koreans?  Japanese?  . . . no big deal.  Guamanians?  . . . justifiable losses. . .  .  They don't even HAVE a Senator in Congress. . . 
Trump playing games with the lives of people he's obviously completely disengaged from.