A failure by the United States to continue military aid to Ukraine would spell disaster for Ukraine and its Western allies while emboldening Russia and other potential aggressors.

Climate change is fueling geopolitical competition in the Arctic. An independent Greenland could play an important role in years to come.

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.

The assassination of Iranian scientist Mohsen Fakhrizadeh will intensify debate in Tehran over whether to reengage in the nuclear deal with the Biden administration.