October 23, 2016 (Sunday)
Armed conflicts and attacks
- Yemeni Civil War (2015–present)
- Saudi Arabian-led air raids on the Yemeni capital Sana'a resume after a truce ends. (The Daily Mail)
- Naxalite–Maoist insurgency
- Indian police kill at least 24 Maoist rebels during a raid in eastern Orissa State. (BBC)
Disasters and accidents
- A gas explosion in the Russian city of Ryazan kills at least three people and injures 13 others. (RT)
- A collision between a tour bus and a tractor-trailer kills at least 13 people, and injures 31 others in Desert Hot Springs, California, United States. (The Los Angeles Times)
Law and crime
- Two explosions in a park in the Japanese city of Utsunomiya, Tochigi Prefecture, kill at least one person and injure three others. Local media report that a 72-year-old ex-military officer is responsible for the blasts. A fire the same day destroyed the suspect's house. (The Guardian), (BBC)
Politics and elections
- Aftermath of Brexit, UK Independence Party leadership election, November 2016
- Suzanne Evans, former UK Independence Party (UKIP) deputy chairman, and Paul Nuttall, President of the Initiative for Direct Democracy in Europe and Member of the European Parliament, each announce their candidacy for the UKIP leadership position, now held on interim basis by Nigel Farage. Other confirmed candidates are Bill Etheridge, Raheem Kassam, and Peter Whittle. (BBC)
- Lithuanian parliamentary election, 2016
- Voters head to the polls in second round elections in constituencies where no candidate won over 50 percent on October 9 with the Lithuanian Peasant and Greens Union winning a plurality of seats. (Reuters), (AP)
- 2015–16 Spanish government formation 2016 PSOE crisis
- The Socialist Workers' Party, following the party's 139–96 vote approving this action, say they will abstain from voting against acting Prime Minister Mariano Rajoy when he puts his People's Party coalition government to parliament this week, thereby ending the 10-month deadlock. (The New York Times), (Reuters)