Editing 1958 (section)

=== May ===
{{Main|May 1958}}
* [[May 1]]
** [[Arturo Frondizi]] becomes [[President of Argentina]].<ref>{{cite book|title=Foreign Relations of the United States, 1958–1960: American republics|url=https://books.google.com/books?id=srpzvn1OqHUC&pg=PA18|year=1986|publisher=U.S. Government Printing Office|pages=18}}</ref>
** U.S. space scientist [[James van Allen]] announces the discovery of Earth's [[magnetosphere]].<ref>{{cite book|author=John M. Logsdon|title=Exploring the Unknown: Selected Documents in the History of the U.S. Civil Space Program|publisher=NASA|year=2004|page=158}}</ref>
** The [[Nordic Passport Union]] comes into force.
* [[May 10]] – Interviewed in the Chave d'Ouro café, when asked about his rival [[António de Oliveira Salazar]], [[Humberto Delgado]] utters one of the most famous comments in Portuguese political history: "Obviamente, demito-o! (Obviously, I'll sack him!)".
* [[May 12]] – A formal [[North American Aerospace Defense Command]] agreement is signed between the United States and Canada.
* [[May 13]]
** [[May 1958 crisis in France|Crisis in France]]: [[Pied-Noir|French Algerian]] protesters seize government offices in [[Algiers]], leading to a military coup.
** During a visit to [[Caracas]], [[Venezuela]], [[Vice President of the United States|Vice President]] [[Richard Nixon]]'s car is attacked by [[Anti-Americanism|anti-American]] demonstrators.
* [[May 15]] – The [[Soviet Union]] launches [[Sputnik 3]].
* [[May 18]] – A U.S. [[Lockheed F-104 Starfighter]] sets a world speed record of {{Convert|1404.19|mi/h|km/h|abbr=on}}.
* [[May 20]] – The [[Cuba]]n government of [[Fulgencio Batista]] launches a counteroffensive against Castro's rebels.
* [[May 22]] – U.S. President [[Dwight D. Eisenhower]] becomes the first American elected official to appear on color television. 
* [[May 28]] – [[Real Madrid C.F.|Real Madrid]] beats [[A.C. Milan]] 3–2 at [[Heysel Stadium]], [[Brussels]], and wins the [[1957–58 European Cup]] in Association football.
* [[May 30]] – The bodies of unidentified United States soldiers killed in action during World War II and the [[Korean War]] are buried at the [[Tomb of the Unknowns]], in [[Arlington National Cemetery]].