The G7 on Dec. 12 said time was running out for Iran to agree a deal to curb its nuclear ambitions, and warned Russia of "massive" consequences if it invades Ukraine.
Foreign ministers from the world's richest nations held a two-day meeting in Liverpool, northwest England, seeking to present a strong, united front against global threats.
Yet, mysteriously, there was no physical contact. By spring 2017 there were more than 80 alleged cases. Their medical diagnosis was akin to a "concussion without a concussion." Shortly after, more than two dozen personnel and family members attached to the Canadian Embassy in Havana began to report similar symptoms, but no noises. The "Havana Syndrome" was born.
Tens of thousands took to the streets in cities across Europe and Australia on Nov. 20 as anger mounted over fresh COVID restrictions imposed against a resurgent pandemic.
And Dutch police faced a second night of rioting - this time in The Hague - after the previous night's violence in the port city of Rotterdam.
A lockdown for those not vaccinated against COVID-19 has come into force in Austria. Citizens who are not immunized will only be able to leave their homes if necessary, to visit a doctor or to go to work. They are also allowed to go for short walks.
Checkpoints will also be set up to monitor compliance. Violations will be punishable by fines of up to 1,450 euros.