2014 Sydney hostage crisis
The 2014 Sydney hostage crisis, also known as the Sydney siege and Lindt Cafe siege, occurred on 15–16 December 2014 when a lone gunman, Man Haron Monis, held hostage ten customers and eight employees of a Lindt chocolate café located at Martin Place in Sydney, Australia. Police treated the event as a terrorist attack at the time, but Monis' motives were subsequently debated. However, the findings of the Coroner in 2017 deemed the event to be a terrorist attack.
Attacks on Australia during World War II
On the evening of 31 May/morning of 1 June 1942, Sydney harbour came under direct attack from Japanese midget submarines. , a converted ferry being used as a troop sleeper, was hit and sunk. 22 sailors were killed, 19 Australians and 2 members of the Royal Navy.