The world's smallest kingdoms, including Wallis and Futuna, Bhutan, and Tonga, maintain unique cultural identities and ...

In late 1825, a group of reform-minded Russian military officers believed the time was ripe to end the rule of the czars.

There have been major clashes between the federal government and the states, but nothing like what Trump is fomenting now.

As Prince Harry and Meghan Markle continue to chart their own course away from the British monarchy, fresh speculation has ...

US President Donald Trump’s Iran strike tests the limits of presidential power and revives a centuries-old debate over who ...