Chat with us in Facebook Messenger. Find out what's happening in the world as it unfolds.

An unnamed gunman gestures after shooting the Russian Ambassador to Turkey, Andrei Karlov, at a photo gallery in Ankara, Turkey, Monday, Dec. 19, 2016. The Russian foreign ministry spokeswoman said he was hospitalized with a gunshot wound. (AP Photo/Burhan Ozbilici)
An unnamed gunman gestures after shooting the Russian Ambassador to Turkey, Andrei Karlov, at a photo gallery in Ankara, Turkey, Monday, Dec. 19, 2016. The Russian foreign ministry spokeswoman said he was hospitalized with a gunshot wound. (AP Photo/Burhan Ozbilici)

    JUST WATCHED

    What do we know about the Turkish assassin?

MUST WATCH

What do we know about the Turkish assassin?

The gunman, who killed the Russian ambassador to Turkey, was heard shouting "Do not forget Aleppo!" CNN's Muhammad Lila reports.

What do we know about the Turkish assassin?

The gunman, who killed the Russian ambassador to Turkey, was heard shouting "Do not forget Aleppo!" CNN's Muhammad Lila reports.