RT News - August 30, 2015 (17:00 MSK)

Two U.S. journalists are killed by a sacked colleague during a live broadcast, sparking fresh calls for tighter gun controls; A grim chapter in Europe's migrant crisis - after the bodies of over 70 refugees, including four children, were found in an abandoned truck on an Austrian motorway; Protesters in Lebanon give their leaders three days to call an election, tackle corruption and get rid of garbage amid warnings that the country could be teetering on the edge of an Arab Spring-style uprising.