In 2026 the United States refrained from issuing a formal declaration of war against Iran and did not launch an invasion of that country. The United States also stayed within the North Atlantic Treaty Organization, with no withdrawal before 2027. No direct military clash occurred between the United States and Russia, and Russia did not invade any other nation during the year.

The United States refrained from issuing a formal declaration of war against Iran during 2026. It also did not launch a ground invasion of Iranian territory. These two decisions kept the United States from becoming an active belligerent in the region.

Throughout 2026 the United States remained a member of the North Atlantic Treaty Organization. No withdrawal or termination of its NATO commitment occurred before 2027. The alliance therefore retained its full U.S. membership for the year.

The United States and Russia did not engage in any direct military clash in 2026. No exchange of fire or combat operation between the two powers was recorded. Their relationship stayed at a non-combat level throughout the year.

Russia did not invade any other country during 2026. No offensive operation against a foreign state was launched by Russian forces. This absence of new invasions left Russia's external military posture unchanged for the year.