Game theory. Even the basic Prisoner's Dilemma calls for it. If a nation cannot field a credible threat then defection is the dominant strategy for underdogs. Lately that does not mean Economic underdogs but rather ideological under dogs.

I don’t have any enemies.

Whatever _you_ think of others doesn't change them into friends or neutrals [1].

It's what they think of you that matters.

(And "you" here can mean you personally or your business, your country, etc., any level where one can have enemies at).

[1] Except through some long process of changing their hearts, and so on, and even there it's usually not a matter of hearts - e.g. irrational hatred - but of interests - e.g. they win something material from going after you.