Then how long of a period is required to have passed before they can be officially considered to have "stopped?" https://en.wikipedia.org/wiki/List_of_North_Korean_missile_tests https://en.wikipedia.org/wiki/List_of_nuclear_weapons_tests_of_North_Korea As Shapiro points out they have promised many times to play nice with the other kids on the playground. Fact is they have started and stopped doing so many times over the years. What we have so far is another piece of paper and another promise. It's much too soon to determine what will become of this latest signing.