Why are 120,000 people leaving Nagorno-Karabakh?

Thousands of ethnic Armenians fled the breakaway region of Nagorno-Karabakh on Monday (September 25), queuing up for fuel and jamming the road to Armenia after their decades-old separatist state was defeated by Azerbaijan in a lightning military operation. What is going on and what does it mean for the wider region? Olivia Chan has more.