RT News - August 20, 2014 (17:00 MSK)

An Islamic State fighter shown beheading an American photojournalist in Iraq was reportedly British. Downing Street is preparing an urgent response; Dozens more protesters are arrested in Ferguson after US police shoot dead another black man. The suspect was wielding a knife but had not attacked officers; And at least 5 civilians are among the latest victims of the military operation in Eastern Ukraine. Residents in the region's largest city say they're living in constant fear for their lives.