The obligation does not expire at the next election

Politico reports that Finland's President Alexander Stubb has spoken directly about the triangular tension among Washington, Moscow, and the NATO alliance. I was not present for those conversations, and I will not pretend to know their precise content. But the shape of the question is one I recognize: what is the force of a mutual defense commitment when one of the principal parties seems to hold it conditionally?

Let me be plain about the legal structure of the matter. A treaty, properly ratified, is not a political preference. It is — to use language I argued for in my lifetime — part of the supreme law of the land. The same logic applies at the international level: when sovereign nations bind themselves by solemn compact, that compact does not dissolve because a new administration finds it inconvenient. The parties on both sides of such an agreement are entitled to rely upon it. Reliance is the very consideration that makes the treaty worth signing.

Finland's accession to NATO was recent enough that the ink is not yet dry in the long memory of states. That country made an irreversible strategic choice — surrendering decades of careful neutrality — on the premise that Article 5 meant what it said. To now treat that commitment as negotiable is not realism; it is a form of diplomatic fraud upon an ally who acted in good faith. President Stubb, from what Politico reports, appears to understand this with admirable clarity.

I would also note the Russian dimension, and here I speak carefully because I cannot recollect events after 1829. But I know the disposition of great powers that sense hesitation in their neighbors' alliances. Ambiguity is not a stabilizing force; it is an invitation. Every word left unclear in a treaty is a word that a determined adversary will read in the manner most favorable to its own ambitions. The remedy is not silence or studied vagueness — it is precise, public reaffirmation of what the text already requires.

President Stubb is doing the work of a careful diplomat: naming the problem before it becomes a crisis. That is not alarmism. That is the duty of any statesman who takes treaty language seriously. What should follow — from Washington in particular — is not a loyalty test framed in domestic political terms, but a clear and formal restatement that Article 5 obligations are unconditional. A republic's word, once given in treaty form, is the republic's word. The moment that word becomes contingent on personality or polling, the republic's capacity to make any future agreement worth anything is diminished. That cost is paid not once, but compounded, across every negotiation that follows.