Warning: Be careful — NATO's Article 5…

Finland has warned that such wording could weaken the collective defense clause at the heart of NATO, according to a State Department cable obtained today by Politico.

The January 20 cable, sent from the U.S. Embassy in Helsinki to Washington, highlights concerns over the terminology used in peace talks between Kyiv and Moscow, noting that even seemingly similar phrasing could have serious security consequences.

According to the document, Finnish Foreign Minister Elina Valtonen discussed the matter on January 19 with U.S. Congress members Jack Bergman and Sarah Elfreth, who serve on the House Armed Services Committee.

Valtonen emphasized that Finland views Russia as “a long-term strategic threat” and warned that a “weak” peace agreement for Ukraine could limit its ability to defend itself against future Russian aggression.

At the same time, she expressed opposition to using the term “Article 5–like security guarantees” for Ukraine, stating that it could create an equivalence between NATO obligations and potential bilateral or multilateral promises made to Kyiv.

The cable notes that Valtonen stressed the need for a “firewall” between NATO and any future security arrangements for Ukraine, a position echoed later by Finland’s defense minister.

A Finnish government official, speaking on condition of anonymity, said that Valtonen’s office does not comment on confidential discussions but emphasized Helsinki’s long-term goal that Ukraine should one day become a NATO member.

“Finland’s goal is to provide Ukraine with the strongest possible security arrangements and guarantees in support of sustainable and lasting peace,” the official said, stressing that Finland’s position is that Ukraine’s future lies within NATO.

Article 5 of the North Atlantic Treaty provides that an armed attack against one NATO member is considered an attack against all members of the alliance. This clause has only been invoked once, following the terrorist attacks on the United States on September 11, 2001.

According to Politico, the content of the cable also reflects the concerns of other Finnish officials, who emphasize that while they want to help Ukraine defend itself, the concept of a formal security “guarantee” is a matter of far-reaching significance on which no consensus has yet been reached.