Mr. Orban, Hungary's political leader, seems to be trying to use Hungary's membership in NATO by threatening to vote to not approve Sweden’s and Finland’s accession to the alliance unless it gets money from the EU. (Hungarian original article, use DeepL.com to translate; Google Translate materially distorts the report)
Where, if anywhere, can NATO sue Hungary for its noncompliance with the 2-percent military-spending requirement? Is it the International Court of Justice that has jurisdiction?
What would the remedy be? The nullification of the treaty of accession or some other remedy?
How long would such a process expectedly take if the parties wouldn’t settle the matter outside of litigation?
What precedent (binding or compelling) exists that may govern the litigation?