The mana bomb that destroyed Theramore is Warcraft's equivalent of a nuke. The analogy is even stronger when one reads that the mana bomb was engineered after one salvaged from Outland upon the defeat of Kael's blood elves - not unlike the Allies taking nuclear technology from the Germans in the aftermath of WWII.
Goes hand-in-hand with the overall "Cold War" stance of the Alliance and Horde.
Kinndy agrees with Jaina instating a curfew in Theramore, saying it means people won't "get into trouble." Jaina even playfully confronts Kinndy about this, since she's only an adolescent.