June 18, 2023 (Sunday)
Armed conflicts and attacks
- Russian invasion of Ukraine
- 2023 Ukrainian counteroffensive
- Ukrainian forces capture the front line village of Piatykhatky in Zaporizhzhia Oblast as heavy fighting continues. (Reuters)
- 2023 Ukrainian counteroffensive
Disasters and accidents
- Six people are killed and 28 others are reported missing after heavy rains cause flash floods across Nepal. (Sharjah24)
- Titan submersible implosion
- Five people are killed when an OceanGate submersible implodes during a commercial trip to the wreck of the Titanic. (BBC News)
Law and crime
- 2023 DuPage County shooting
- A person is killed and 22 more injured during a mass shooting at a Juneteenth celebration in Willowbrook, Illinois, United States. (ABC News)
- Fourteen people die from drinking bootleg alcohol in Alborz province, Iran. (RFE/RL)
Politics and elections
- 2023 Malian constitutional referendum
- Malians head to the polls to vote on a referendum that, among other things, would enhance the powers of the President. (Al Jazeera)
- 2023 Kuwaiti general election
- Kuwaiti Prime Minister Ahmad Nawaf Al-Ahmad Al-Sabah forms a new cabinet following his reappointment, appointing Ahmed Al-Fahad Al-Ahmed Al-Sabah as the defense minister and Saad Al Barrak as the oil minister. (The Straits Times)
Sports
- 2022–23 PGA Tour
- In golf, American Wyndham Clark wins the 2023 U.S. Open, his first major championship, after shooting a final-round 70 to finish at 10-under-par and holding off four-time major champion Rory McIlroy of Northern Ireland. Clark had never finished better than 75th in a major championship and had missed the cut in his previous two U.S. Opens. (BBC Sport)
- 2022–23 UEFA Nations League
- In association football, Spain defeat Croatia 5–4 on penalties, after a 0–0 draw, in the final held at the De Kuip in Rotterdam, Netherlands, to win their first UEFA Nations League championship. (BBC)
- 2022–23 CONCACAF Nations League
- In association football, the United States defeat Canada 2–0 in the final held at Allegiant Stadium in Paradise, Nevada, United States, to win their second CONCACAF Nations League championship. Christian Pulisic is named the tournament's "best player". (AP via The Indian Express)