The Quad, composed of the United States, Australia, India, and Japan, is not a formal alliance. Still, the group has intensified its security and economic ties as tensions with China rise.

Plans to cut greenhouse gas emissions and reach carbon neutrality, to be announced during the 2019 summit, could be an important milestone in the global fight against climate change.

Daniel Noboa Azín is the youngest president in Ecuador’s history and faces immediate challenges in tackling the country’s grave economic and security crises.

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.

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

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.