Six-Day War

=== Allegations of military support from the US, UK and Soviet Union ===
There have been a number of allegations of direct military support of Israel during the war by the US and the UK, including the supply of equipment (despite an embargo) and the participation of US forces in the conflict.{{Sfnp|Mansour|1994|p=89}}{{Sfnp|Green|1984|p={{pn|date=December 2021}}}}<ref>{{Cite news |title=Envoys Say Nasser Now Concedes U.S. Didn't Help Israel |work=The New York Times |last=Smith |first=Hedrick |date=15 September 1967 |at=p.&nbsp;1, col.&nbsp;5, p.&nbsp;3, col.&nbsp;1}}</ref>{{Sfnp|Bowen|2003|p=89}}{{Sfnp|Phythian|2001|pp=193–194}} Many of these allegations and [[Arab conspiracy theories|conspiracy theories]]{{Sfnp|Shlaim|Louis|2012|pp=8, 53, 60, 75, 193, 199, 297}} have been disputed and it has been claimed that some were given currency in the Arab world to explain the Arab defeat.{{Sfnp|Podeh|Winckler|2004|pp=51–62}}
It has also been claimed that the Soviet Union, in support of its Arab allies, used its naval strength in the Mediterranean to act as a major restraint on the US Navy.{{Sfnp|Hattendorf|2000|p={{pn|date=December 2021}}}}<ref name="bg1983">{{Cite news |url=https://pqasb.pqarchiver.com/boston/access/663999751.html?FMT=ABS&date=Sep%2016,%201983 |title=McNamara: US Near War in '67 |date=16 September 1983 |work=The Boston Globe |page=1 |access-date=7 July 2017 |via=The Boston Globe Archive |archive-url=https://web.archive.org/web/20130324193751/http://pqasb.pqarchiver.com/boston/access/663999751.html?FMT=ABS&date=Sep%2016,%201983 |archive-date=24 March 2013}}</ref>

America features prominently in Arab conspiracy theories purporting to explain the June 1967 defeat. [[Mohamed Hassanein Heikal]], a confidant of Nasser, claims that President [[Lyndon B. Johnson]] was obsessed with Nasser and that Johnson conspired with Israel to bring him down.{{Sfnp|Shlaim|Louis|2012|p=8}} The reported Israeli troop movements seemed all the more threatening because they were perceived in the context of a US conspiracy against Egypt. Salah Bassiouny of the Foreign Ministry, claims that Foreign Ministry saw the reported Israeli troop movements as credible because Israel had reached the level at which it could find strategic alliance with the United States.{{Sfnp|Shlaim|Louis|2012|p=60}}

During the war, Cairo announced that American and British planes were participating in the Israeli attack. Nasser broke off diplomatic relations following this allegation. Nasser's image of the United States was such that he might well have believed the worst. However [[Anwar Sadat]] implied that Nasser used this deliberate conspiracy in order to accuse the United States as a political cover-up for domestic consumption.{{Sfnp|Shlaim|Louis|2012|p=75}} Lutfi Abd al-Qadir, the director of [[Egyptian Radio|Radio Cairo]] during the late 1960s, who accompanied Nasser to his visits in Moscow, had his conspiracy theory that both the Soviets and the Western powers wanted to topple Nasser or to reduce his influence.{{Sfnp|Shlaim|Louis|2012|p=199}}