MLS Cup 2021 New York City FC defeats the Portland Timbers 4–2 in a penalty shoot-out, winning their first title.
Benin A court in Benin sentences opposition leader Reckya Madougou to 20 years in prison after finding her guilty of "financing terrorism". The case has been highly controversial, with a judge in the case fleeing to France and denouncing the case as "entirely politically motivated".
COVID-19 pandemic Mauritius reports its first cases of the SARS-CoV-2 Omicron variant in two people who travelled from South Africa.
At midnight, terrestrial transport between Argentina and Uruguay reopens as buses resume service to border crossings between the two countries. Both countries require a proof of vaccination or a negative COVID-19 test in order to board the buses and enter both countries.
Turkey reports its first six cases of the SARS-CoV-2 Omicron variant in five people from the province of Izmir and one person from Istanbul.
Malta reimposes one of the EU's strictest mask mandates that requires people to wear masks outdoors, with fines of €50 to €100 for failure to comply.
Taiwan reports its first cases of the SARS-CoV-2 Omicron variant in three people who travelled from the United Kingdom, Eswatini, and the United States.
South Korea reports a record 80 deaths from COVID-19 in the past 24 hours, thereby bringing the nationwide death toll to 4,210.
Bangladesh reports its first cases of the SARS-CoV-2 Omicron variant in two female cricketers of the Bangladesh Cricket Team who travelled from Zimbabwe.
2021 Ravanusa explosion Seven people are dead and two more missing after a residential building explodes and collapses due to a gas leak in Ravanusa, Agrigento, Sicily, Italy.
Tornado outbreak of December 10–11, 2021 The death toll from the tornado outbreak in Kentucky, United States, increases to 70 and will likely continue to increase as more bodies are counted, according to a statement from Governor Andy Beshear.
2019–2021 Persian Gulf crisis The Gulf Cooperation Council calls for Iran to take action to salvage the nuclear deal and proposes to take part in the talks as a regional power.
Israeli Defense Minister Benny Gantz says he has instructed the Israel Defense Forces to prepare military options for potential use against Iran, that the Joint Comprehensive Plan of Action yielded "no progress", and that world powers "understand that the Iranians are playing games".