Editing 1958 (section)

=== April ===
{{Main|April 1958}}
* [[April 1]] – The [[Treaty of Angra de Cintra]] is signed by [[Spain]] and [[Morocco]], ending the [[Spanish protectorate in Morocco]].<ref name=Schwinghammer>{{Cite book|last=Schwinghammer|first=Torsten|url=https://books.google.com/books?id=XpRXDwAAQBAJ&dq=ifni+war+casualties&pg=PT260|title=Warfare Since the Second World War|date=2018-04-24|publisher=Routledge|isbn=978-1-351-28970-2|language=en}}</ref>
* [[April 3]] – In Cuba, [[Fidel Castro|Castro]]'s revolutionary army begins its attacks on [[Havana]].
* [[April 13]] – The Soviet satellite [[Sputnik 2]] (launched November 3, 1957) disintegrates during reentry from orbit.<ref>{{cite book|title=United States Congressional Serial Set|url=https://books.google.com/books?id=HQo7AQAAMAAJ&pg=RA35-PA63|year=1959|publisher=U.S. Government Printing Office|pages=35}}</ref>
* [[April 14]] – [[Van Cliburn]] wins the [[International Tchaikovsky Competition]] for [[piano|pianists]] in Moscow, easing [[Cold War]] tensions.<ref>{{cite book|title=Current Biography Yearbook|url=https://books.google.com/books?id=rwZaAAAAYAAJ|year=1958|publisher=H. W. Wilson Company|page=95}}</ref>
* [[April 17]] – King [[Baudouin of Belgium]] officially opens the [[world's fair]] in [[Brussels]], also known as [[Expo 58]]. The [[Atomium]] forms the centrepiece.
* [[April 20]] – The [[Montreal Canadiens]] win the [[Stanley Cup]] in [[ice hockey]], after [[1958 Stanley Cup Finals|defeating]] the U.S. [[Boston Bruins]] in 6 games.
* [[April 21]] – [[United Airlines Flight 736]] is involved in a mid-air collision with a U.S. Air Force [[North American F-100 Super. Sabre|F-100F]] jet fighter over what becomes [[Enterprise, Nevada]]; all 49 persons in both aircraft are killed.
* [[April 28]] – A bomber flown by a U.S. [[Central Intelligence Agency]] operative in support of Indonesian [[Permesta]] rebels bombs the harbor at [[Balikpapan]], [[Borneo]], [[Indonesia]], hitting an Indonesian naval corvette and two British [[oil tanker]]s. In June, the Indonesian and British governments both claim that Indonesian rebels are responsible for such attacks, concealing the C.I.A.'s involvement.