Last month's presidential election Former candidate Manuel Valls (PS) announces his support for Emmanuel Macron (En Marche!) rather than for his own party's nominee, Benoît Hamon.
Brexit The United Kingdom formally notifies the European Council of its intention to withdraw from the European Union and the European Atomic Energy Community. There is not yet agreement on a negotiations roadmap.
United States immigration ban In response to a federal appeal, U.S. District Judge Derrick Watson (Hawaii), who on March 15 issued a temporary, national restraining order on implementation of the revised federal immigration-refugee rules, upgrades his earlier ruling to a preliminary injunction until Hawaii's lawsuit is resolved.
Pickup truck A head on crash between a pickup truck and a church bus outside Garner State Park in the American state of Texas kills at least 12 people and injures 3 others.
European Commission The European Commission blocks the third attempt of the London Stock Exchange and Deutsche Börse at a merger, citing the danger of a "de facto monopoly in the crucial area of fixed income instruments".
Swedish Academy The Swedish Academy announces that American singer-songwriter Bob Dylan has agreed to accept his Nobel Prize in Literature this weekend at a private location in Stockholm.
Iraqi Civil War (2014–2017) A car bomb attack on a police checkpoint in Baghdad kills at least 15 people and injures 40 others.
Turkish military intervention in Syria Turkish Prime Minister Binali Yıldırım announces an end to the operation Euphrates Shield, which was part of international military operations against ISIL. He adds: "Any operation following this one will have a different name."