There are problems with the chain of command in your base. Maybe your superior officers are incompetent, or do not trust you, or maybe they are ambitious and demand the impossible from you. Maybe some politicians are interfering in UNIT’s mission or the local population objects to UNIT’s presence.

Missions are regularly made harder by political problems. It’s not enough to find the shapeshifting alien land shark – you’ve got to find the shapeshifting alien land shark without disrupting the local tourist industry!