US policy under the current administration has intensified pressure on NATO allies through selective working groups like the Bergen Group, which has favored higher-spending members such as Poland, Germany, Norway, Sweden, Finland, and the Netherlands while excluding others including the UK, France, and the Baltic states from recent planning sessions on alliance priorities. This approach follows earlier disputes over defense spending targets, base access, and participation in operations like those related to Iran, prompting US reviews of force posture in Europe and renewed legislative efforts such as the NATO Shield Act to require congressional approval for any US withdrawal. Treaty procedures under Article 13 allow a one-year notice period for any member to exit voluntarily, though no formal denunciations have occurred, and statements at the 2026 Ankara summit reaffirmed US commitment despite ongoing alliance frictions. These dynamics, alongside isolated proposals in European parliaments, shape trader assessments of exit risks within the market's timeframe.