Is the U.S. Obligated to Defend Alaska from Invasion?

Yes, unequivocally. Alaska has been a U.S. state since 1959. The federal government's constitutional duty to "provide for the common defence" (Article I, §8; Article IV, §4) applies to all states equally.

Legal Basis

• U.S. Constitution: Article IV, §4 – "The United States shall guarantee to every State in this Union a Republican Form of Government, and shall protect each of them against Invasion."
• UN Charter (Art. 2(4) & 51): Prohibits force against territorial integrity; recognizes inherent right of individual/collective self-defense.
• NATO (Art. 5): Alaska is within the NATO area (north of 60°N latitude exception removed 1952). Attack on Alaska = attack on all NATO members.

Operational Reality

• JBER (Joint Base Elmendorf-Richardson): F-22s, C-17s, HH-60Gs, Alaskan Command (ALCOM).
• Eielson AFB: F-35A squadrons (first PACAF F-35 base).
• Clear Space Force Station: Missile warning (LRDR).
• Fort Wainwright / Fort Greely: Arctic-capable ground forces (11th Airborne Div), GMD interceptors.
• Coast Guard: District 17 (Juneau) – Arctic patrol, SAR, law enforcement.

Alaska's strategic location (Bering Strait, Arctic, North Pacific) makes it the most heavily defended U.S. state per capita. An invasion would trigger immediate national & alliance response.