There is a problem with using this kind of script. While the script is running the player cannot load or save, and once the script halts it will not start up again. It will only be run once when the campaign first starts.

Scripts that get started with descr_strat.txt can really only be used to set things up in the first turn, or maybe to control things in the very early game.

You can start up scripts durring the campaign by using the advice system, but that requires intervention by the player.