RT News - July 18, 2016 (12:00 MSK)

Gunmen armed with machine guns open fire near a police headquarters shooting dead three officers, one civilian and leaving seven others in critical condition in Kazakhstan's city of Almaty. An anti-terror operation is now underway. Turkey steps up its crackdown on opposition voices after the attempted coup, while battles erupt on the streets of Istanbul with police using tear gas. A gunman who killed three police officers in Baton Rouge, Louisiana is identified as a former marine, who had publicly called for revenge attacks against police. Donald Trump is set to be named as the official Republican nominee for America's top job, as the party's convention opens later today.