Vladimir Putin has warned there will be "consequences" if Ukraine has used its army against pro-Russian activists.
An Afghan security guard has opened fire on a group of foreign doctors at a Kabul hospital, killing three American physicians.
Relatives of missing victims of the South Korea ferry disaster have forced their way into the office of the coastguard and attacked its Deputy Director, Choi Sang-Hwan.
A Florida fisherman has reeled in an 805lb (365kg) mako shark along a Gulf Coast beach.
Scientists who examined the body of one of the world's oldest women say dying stem cells may be the "limit" on our lifespans.