Ukraine President Volodymyr Zelensky was a popular comedian just four years ago before becoming a major player on the world stage, as his nation tries to fend off a Russian invasion. Here's a look at his time as a candidate and now a world leader.

Ukrainian President Volodymyr Zelensky meets with Congress, President Joe Biden returns from the U.N. General Assembly and Attorney General Merrick Garland is grilled over Hunter Biden and Donald Trump cases, among the highlights of this week in Washington.

World leaders including U.S. President Joe Biden, Ukrainian President Volodymyr Zelensky and more gather at the 78th session of the United Nations General Assembly in New York City, which runs through September 26. Other events also coincide with the General Assembly, including a Universal Health Coverage Forum attended by the Prime Minister of Japan, Fumio Kishida, and Bill Gates.

Britain's King Charles III and Queen Camilla visit France on a three-day state trip. The royal couple headed straight to central Paris to meet with President Emmanuel Macron and his wife, Brigitte Macron, at the Elysée Palace on September 20, 2023.

Formula One fans in Tokyo got to see cars and drivers up close before the F1 Japan Grand Prix on September 20, 2023. The big race is set for September 24.

Britain's Prince William visits a FDNY Firehouse and holds the Earthshot Prize Innovation Summit in New York City on September 19, 2023. The event announced the 15 innovators in the running to win one of five grants to help fight climate change. William also met with world leaders as the U.N. General Assembly takes place.

The St. Louis Cardinals beat the Milwaukee Brewers 1-0, giving pitcher Adam Wainwright his 200th career win at Busch Stadium in St. Louis on September 18, 2023. Wainwright is the third Cardinals pitcher and the 122nd player in MLB history to win 200 games.

The ruins of the Tel es-Sultan archeological site near Jericho in the West Bank have been designated a UNESCO World Heritage Site. The ruins, in Palestinian-controlled territory, date back to the ninth millennium BCE. Israel does not agree with the decision.

The Pittsburgh Steelers beat the Cleveland Browns 26-22 at Acrisure Stadium in Pittsburgh on September 18, 2023. The Steelers' defense was the difference, as T.J. Watt scored on a 16-yard fumble return in the fourth quarter. The Browns lost running back Nick Chubb to injury in the second quarter.

Former President Bill Clinton and former Secretary of State Hillary Clinton, along their daughter, Chelsea, host the 2023 Clinton Global Initiative event in New York City, which runs through September 19. The event brings together global leaders to discuss solutions to the world's most pressing challenges.

United Auto Workers go on strike outside the Stellantis plant in Toledo, Ohio -- where Jeep Wranglers and Gladiators are made -- on September 18, 2023. UAW workers at Ford, General Motors and Chrysler's parent company Stellantis began their strike on Friday, seeking a 40% pay raise.

World leaders convene at the United Nations Headquarters in New York City for the 2023 Sustainable Development Goals Summit, which runs through September 19. Participants will speak on addressing socioeconomic issues. The summit is happening amid a high-level session of the General Assembly.

The St. Louis Cardinals beat the Philadelphia Phillies 6-5 at Busch Stadium in St. Louis on September 17, 2023. The Cardinals' Jordan Walker hit a tie-breaking home run in the eighth inning. The Cardinals had lost their first five games against the Phillies this year.

Here's a look at celebrities who have split from their significant others or spouses in 2023.

Running back D'Andre Swift ran for a career-high 175 yards, helping the Philadelphia Eagles outgain the Minnesota Vikings 259 to 28 on the ground in a 34-28 win in Philadelphia on Sept. 14, 2023. The Eagles are now 2-0.

Japanese musician Yoshiki participates in a hand and footprint ceremony immortalizing him in the forecourt of the TCL Chinese Theatre (formerly Grauman's) in the Hollywood section of Los Angeles on September 14, 2023. Yoshiki made history by becoming the first Japanese artist to be immortalized in cement since the theater began this Hollywood tradition in 1927.

U.S. Sen. Mitt Romney, R-Utah, has announced he won't seek re-election in 2024, calling for a new generation of leaders. Romney, 76, a former governor of Massachusetts, has served in the Senate since 2018. He ran unsuccessfully for president against Barack Obama in 2012. In 2020, Romney was the lone Republican to vote to convict President Donald Trump in his first impeachment trial.

Stars attend the Forbes Power Women's Summit on September 14, 2023 at Jazz at Lincoln Center in New York City. The annual event celebrates women across several careers. Attendees include award-winning journalist Katie Couric, Golden Globe-winning actress Kim Cattrall, Ambassador Linda Thomas-Greenfield, Grammy-winning singer and actress Mary J. Blige, WNBA All-Star Sue Bird, Emmy and Grammy Award-winning actress Tiffany Haddish and Paralympian Oksana Masters.

First lady Jill Biden and former Secretary of State (and former first lady) Hillary Clinton host an event at the White House for the Praemium Imperiale Laureates on September 12, 2023. The global arts prize is awarded annually by the Japan Art Association for lifetime achievement. The laureates were first celebrated at the White House by Hillary and President Bill Clinton in 1994.

Salma Hayek promoted her film "El Sabor de la Navidad" and Jessica Chastain and Peter Sarsgaard promoted their film, "Memory" at the 2023 Toronto International Film Festival in Canada. The festival runs through September 17 and also features a documentary on Lil Nas X and a new animated film from Hayao Miyazaki.