An occupation of a country can be a (root cause) of an insecurity.
Some source can be constituted-of-or-filled-with insecurity.
Pockets can be constituted-of-or-filled-with (food insecurity).
A situation can be constituted-of-or-filled-with (food insecurity).
An undertow can be constituted-of-or-filled-with insecurities.
Causes can be constituted-of-or-filled-with (food insecurity).