Tensions within NATO stem primarily from U.S. policy under the current administration, including selective inclusion of allies in planning groups like the Bergen format and pressure over defense spending targets plus participation in operations such as those involving Iran. These frictions have prompted public discussion of U.S. withdrawal, yet the president stated at the July 2026 Ankara summit that the United States would not exit, and bipartisan legislation like the NATO Shield Act now requires congressional approval for any such move. No member has issued the one-year notice required under Article 13 of the treaty. Isolated proposals, such as a French parliamentary resolution exploring exit from integrated command, remain fringe and lack government backing. Upcoming events include the Poland meeting of select allies and continued force posture reviews that could test alliance cohesion without triggering formal departures.