This means that if another country's military is capable of ending a person's life, the USA must find a way to one-up that somehow. Otherwise both fighting forces are equally lethal.
What does she have planned? Do they have a weapon that can destroy the eternal soul?
Clearly the most lethal force is the one capable of destroying both the opposing force and itself. Kamala must be signaling an end to the MAD doctrine and will replace it with Unilaterally Mandated Annihilation: Double Belligerent Removal Obligatory