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.

North Korea seeks to exploit major-power rivalries and weaken U.S.-South Korea ties with its ramped-up missile testing. Already, it has ratcheted up nuclear tensions on the Korean Peninsula to their …

An explosion has caused heavy damage to an Iranian nuclear facility just as the country approaches a bold new energy partnership with China, but Iran shows no signs of slowing down its nuclear progra…

President Trump and Prime Minister Morrison’s close relationship is good news for the decades-old alliance.