Defiant: Volodymyr Zelensky is rallying Ukrainians with a series of video messages as Russian assassination squads try to hunt him down.
EPA-EFE/Ukranian presidential press service handout
This painting by Russian artist Alexei Danilovich Kivshenko depicts the ceremonial pledge of allegiance by Ukrainian Cossacks to the Tsar of Russia in 1654.
Heritage Image Partnership Ltd / Alamy Stock Photo
The International Criminal Court has handed arrest warrants for only three heads of state. Could Putin be next?
Ngozi Okonjo-Iweala at the Annual Meeting 2016 of the World Economic Forum in Davos, Switzerland.
WORLD ECONOMIC FORUM/swiss-image.ch/Photo Michael Buholzer/Flickr