Business and economy

• Pharmaceutical giant Merck Group announces that it will purchase Peloton Therapeutics Inc. for $1.05 billion in cash. The catalyst for the deal is Peloton's recent progress in the development of a kidney cancer treatment. (Reuters)
• The Jamie Oliver Restaurant Group, owned by British restaurateur Jamie Oliver, collapses into administration, resulting in 1000 job losses. (BBC)

International relations

• 2019 Venezuelan presidential crisis, Italy–Venezuela relations
  • Venezuela's Ambassador to Italy, Isaías Rodríguez resigns citing the government's lack of finances amid international sanctions on the Nicolás Maduro regime. Rodríguez says due to the sanctions he has been unable to pay his staff or the rent for his office in Rome. (The Guardian)

Law and crime

• Aftermath of the Christchurch mosque shootings
  • Brenton Tarrant, who was accused of killing 51 people and wounding 49 others in two New Zealand mosques, is charged for terrorism. (New York Post) (Mid Day)
• Washington becomes the first U.S. state to legalize Human composting, the right to allow people to have their body turned into soil after death. The process is seen as an alternative to traditional cremations and burials. (BBC)

Politics and elections

• 2019 Indonesian general election
  • Indonesia's General Elections Commission announces that incumbent President Joko Widodo has won last month's presidential election, with 55.5% of the vote. His rival Prabowo Subianto's team, however, refuses to sign and validate the results. (The Guardian)
• 2019 Malawian general election
  • Voters head to the polls to elect the next President of Malawi, Parliament and local government councillors. (BBC) (France 24)
• 2019 Pennsylvania's 12th congressional district special election
  • Voters head to the polls in a special election to elect a new U.S. House Representative to finish the term for Pennsylvania's 12th congressional district after Republican Tom Marino resigned on January 23, 2019. (Fox Philadelphia)
• Trial of Catalonia independence leaders
  • The Catalan leaders that are imprisoned accused of rebellion, Oriol Junqueras, Jordi Turull, Jordi Sànchez and Josep Rull, are sworn in as members of the Congress of Deputies after being elected in the 28th April general election by an authorization of the Supreme Court. (Fox News)
  • Catalan leader Raül Romeva is sworn in as Senator. (The Washington Post)
• 2019 Kentucky elections
  • Voters head to the polls in a primary election that will set the table for the gubernatorial election. (USA Today) (WKYT)
  • Matt Bevin wins the Republican nominee. Andy Beshear wins the Democratic nominee. (New York Times) (Lexington Herald-Leader)
• Aftermath of the Special Counsel investigation (2017–2019)
  • The United States House Committee on the Judiciary subpoenas former White House Communications Director Hope Hicks and former Deputy White House Counsel Annie Donaldson in regards to their actions during the special counsel investigation into Russian interference in the 2016 United States elections. (The Washington Post)

Sports

• 2019 NBA playoffs
  • The Golden State Warriors qualify for the NBA Finals for the fifth year in a row by defeating the Portland Trail Blazers 119–117 in overtime in Game 4 of the Western Conference Finals. (USA Today)

Armed conflict and attacks

• Thirty-two people are killed when Islamic State members started a prison riot and a fire in a prison located in Vahdat, Tajikistan. (BBC) (Al Jazeera) (RT)

Arts and culture

• Whole Foods Market announces it will eliminate disposable plastic straws in July from its stores in the United States, Canada and the United Kingdom. (USA Today)

Business and finance

• Ascena Retail Group announces it will close all 650 Dressbarn stores by the end of the year. (USA Today)

Disasters and accidents

• Two people are killed, the pilot and the passenger, when a floatplane crashes into Metlakatla harbor near Ketchikan, Alaska. The pilot and passenger were the only people on board. (CBS News) (NBC News)

International relations

• North Korea–South Korea relations, Droughts in Korea
  • South Korea vows to send humanitarian aid to North Korea through international organizations as it suffers droughts. (Star Tribune) (The New York Times)
• Iran–Saudi Arabia relations, Iran–United States relations
  • Iranian Minister of Foreign Affairs Mohammad Javad Zarif states that the "genocidal taunts" of U.S. President Donald Trump "won't end Iran", in response to President Trump's comments that if Iran attacked U.S. interests, "that will be the official end of Iran." He also blasted Saudi Arabian Minister of Foreign Affairs Adel al-Jubeir for his previous May 19 remarks regarding Iran. (Brecorder)

Law and crime

• The Swedish prosecutor files an arrest warrant against WikiLeaks founder Julian Assange over a rape allegation. Assange is serving a 50-week prison sentence in the United Kingdom for skipping bail. (Reuters)
• The U.S. Supreme Court in Herrera v. Wyoming rules in favor of a Native American elk hunter from Montana who was convicted for hunting in Bighorn National Forest, deciding that the 1868 federal treaty between the Crow Nation and the U.S. Government is still in force even after Wyoming became a state in 1890. The treaty gave tribe members hunting rights on "unoccupied" lands. (Reuters) (SCOTUS Blog)

Politics and elections

• Ukrainian presidential inauguration
  • Former comedian and reality television actor Volodymyr Zelensky is sworn in as the 6th President of Ukraine by the Verkhovna Rada. Zelensky announces the dissolution of parliament and calls a snap parliamentary election. (Deutsche Welle)
  • Ukrainian Prime Minister Volodymyr Groysman announces he will resign Wednesday in response to the new president's disbanding of parliament. (Al Jazeera)
• Tax returns of Donald Trump
  • Judge Amit Mehta of the United States District Court for the District of Columbia rules that accounting firm Mazars must comply with a subpoena issued by the United States House Committee on Oversight and Reform to turn over U.S. President Donald Trump's financial records. (The New York Times)
• Ibiza affair
  • All ministers from the far-right Freedom Party of Austria, who make up close to half of Austria's cabinet, are resigning in response to their party leader, Heinz-Christian Strache being forced to resign as Vice-Chancellor after a video was published Friday showing Strache's participation in a compromising video. (BBC)
• 2019 Venezuelan presidential crisis
  • Embattled incumbent President of Venezuela Nicolás Maduro proposes early elections for Venezuela's National Assembly. Opposition leader Juan Guaidó has stated a rejection of the proposal. (BBC)
• After several months of negotiations, President Félix Tshisekedi names Sylvestre Ilunga Ilukamba as the new Prime Minister of the Democratic Republic of the Congo in an agreement with former president Joseph Kabila. He had not appointed a prime minister since being elected in December 2018. (Yahoo News))

Science and technology

• The redefinition of the SI system of measurement adopted by the majority of countries in the world takes effect. (BIPM)