State of emergency in Oklahoma as tornadoes kill at least four

WATCH: Pro-Palestinian protests at universities across the world

WATCH: Protesters in Taiwan demand closure of nuclear power plants

Watch: Student protests over Israel Hamas war grip several US states

Watch: UN urged investigate 'crimes committed' by Israel in Gaza

Thousands of Jewish worshippers attend priestly blessing ceremony

WATCH: Improvised Ukrainian drone unit in Russia-seized Bakhmut

WATCH: Hundreds of whales beached on Australian coast

WATCH: Police in Armenia push protesters off road

WATCH: Russia and Kazakhstan continue to grapple with floods

Watch: Russia strikes Odesa, injuring at least nine civilians

Watch: Russian missiles hit the Dnipro region in Ukraine