A pair of boots sit on top of a barricade at Independence Square in Kyiv. Ukraine put its police on high alert after dozens of pro-Russia armed men seized government buildings in the Crimea region and raised a Russian flag.
Demonstrators use slingshots against National Guard troopers during a protest against the government near Caracas, Venezuela.
Children play in a camp for the Nuer ethnic group in South Sudan. Thousands have been killed and almost 900,000 forced from their homes by more two months of battles between rebel and government forces.
A Hindu holy man, or sadhu, cleans his teeth using a twig at the Pashupatinath Temple during the Shivaratri festival in Kathmandu, Nepal.