there is no way in which a country can satisfy the craving for absolute security

“No way.” No way. As in not possible in this world.

but it can easily bankrupt itself,
morally and economically,
in attempting to reach that illusory goal through arms alone.
– President (& General) Dwight D. Eisenhower

In other words, you can’t buy enough guns (etc) to make yourself safe. But you can go completely nuts trying.

Eisenhower quoted by Brian McLaren in Everything Must Change, p 167.