Russia’s moves to mobilize thousands more troops and to annex more of Ukraine’s territory signal a new, potentially more dangerous phase of the war.

Amid renewed calls for changes in the world order, U.S. President Joe Biden sought to stress his support for greater inclusion of developing nations in addressing economic, social, and climate concer…

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

The challenge to Russia’s military and leadership from the mercenary Wagner Group marks a setback to Putin’s stature and possibly the Ukraine war effort.

The meeting of Russian President Vladimir Putin and Chinese leader Xi Jinping in Moscow helped both give the impression of a united front, but underlying tensions were also discernible.

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