7 Days Ep 21: Cincinnati's gorilla; UCLA murder suicide; world's longest railway tunnel

Zack Yusof recaps some of the top stories of the week:

1. Decision to shoot Cincinnati zoo gorilla a correct one
2. UCLA murder suicide shuts down campus
3 Switzerland inaugurates world's longest railway tunnel
4. Mali attack kills UN Chinese peacekeeper
5. Rolling Stones guitarist father of twins at 69