The U.S. military is considering some major shifts to its posture in Europe, including a large withdrawal from bases in Germany, that are raising security concerns on the continent.

Scientists say the rain forest is approaching a critical tipping point at which the damage is irreversible.

The inauguration of President Joe Biden was unlike any U.S. power transition in modern times, providing stark imagery of a country at a crossroads.  

The main battle tanks that the United States and Germany have agreed to provide Ukraine will help its forces punch through Russian fortifications and retake lost territory.

A pending U.S. withdrawal from the Treaty on Open Skies has alarmed some allies in Europe, who fear losing a valuable means of monitoring Russia.