The advanced U.S. fighter aircraft will mark a significant upgrade to Ukraine’s air force, but their impact on the war with Russia will hinge on several factors.

Drone technology has been used extensively in twenty-first-century armed conflict, but the Russia-Ukraine war is driving innovations in autonomous warfare not seen on other battlefields.  

Beijing has tightened its grip on Hong Kong in recent years, dimming hopes that the financial center will ever become a full democracy.

The United States Air Force marks seventy-six years of service.

Africa continues to have more peacekeeping missions than any other continent. As conflict-stricken countries increasingly look outside the United Nations for support, experts say reforms are necessar…