A foreign invasion brings complete economic and agricultural ruin, plunging a nation into severe starvation and deep despair. The conquering enemy will exploit every last resource in the land. This devastation comes as a direct punishment for the Israelites failing to fear God, manifesting as severe curses of hunger and thirst. It stands in stark contrast to the blessings of rain and plenty they were originally promised. Ultimately, this total loss of resources leads to extreme weakness among the survivors, a shrinking population, and horrifying conditions of starvation [צרור המור].
The absolute nature of this destruction is driven by the enemy's origins and goals. Because the invading army arrives from a distant land and has no intention of settling in the conquered territory, they exploit the local resources with absolute disregard for the region's future. They simply take everything they can carry [בכור שור, ביאור שטיינזלץ].
Furthermore, the invaders will not merely consume food until they are satisfied. Following the destructive habits of armies in wartime, they will ruin and burn whatever they cannot take with them. This approach ensures that the local inhabitants are left with absolutely no means of survival [ביאור יש״ר]. The agricultural goods targeted for this looting and destruction include all basic staples, such as the region's wine and oil [ביאור שטיינזלץ].