Tax returns of Donald Trump The United States House Committee on Ways and Means subpoenas United States Secretary of the Treasury Steven Mnuchin and Commissioner of Internal Revenue Charles Rettig to provide President Donald Trump's federal tax returns for the last six years.
Mueller special counsel investigation Republicans Senate Homeland Security Committee Chairman Ron Johnson and Senate Finance Committee Chairman Chuck Grassley request documents related to Christopher Steele, author of the Trump–Russia dossier, in a letter to United States Secretary of State Mike Pompeo and the FBI Director Christopher Wray.
U.S.-China trade war The United States increases tariffs from 10% to 25% on $200 billion worth of imports from China after no deal materialized prior to the midnight deadline.
Uber Uber makes its initial public offering on the New York Stock Exchange, starting by selling stocks at $42 and closing at $41.60. Uber's market cap drops from over $80 billion to about $72 billion.
War in Afghanistan One day after peace talks between the Taliban and the United States ended with no resolution, Taliban militants attack government outposts in northwestern Afghanistan, killing at least twelve Afghan soldiers.
Insurgency in Balochistan Suspected Baloch nationalist gunmen storm a coal mine in Islamabad, Pakistan, killing at least five people.
Boko Haram insurgency About 900 children are released from the Civilian Joint Task Force, a militia formed in Nigeria to counter Boko Haram.
Insurgency in the Maghreb (2002–present) Four hostages, who were being held in northern Burkina Faso, are rescued by French naval commandos, with two French commandos killed during the rescue operation. Those freed include two Frenchmen who had been kidnapped in Benin on May 1 and a pair of women, one an American and the other a South Korean.