In addition, the only aid group they allowed to enter the region was the ICRC.  For these reasons, it was clear that they needed the mobility the MHUs afforded them to ensure basic services were offered to as many citizens in the occupied areas as possible.  The point above is reiterated multiple times in Du Mortier and Coninx's article: the reason why MHUs were deemed acceptable in this case is because they were used as the only option. 