Events: O

O

• Oakley and Sunglass Hut dispute (2001) 2001After Luxottica bought Sunglass Hut in 2001 it cut the Oakley sunglasses sold there; Oakley sued, and the two settled by late 2001. Accounts of the cause differ.
• Obama's apology to Guatemala 1 Oct 2010Telephone call of 1 October 2010 from President Obama to President Colom, and the joint statement of two Cabinet secretaries.
• October Revolution 7–8 Nov 1917The Bolshevik seizure of power in Petrograd on 7 November 1917 (25 October in the old Russian calendar).
• Office of Congressional Ethics review of Spencer Bachus’s 2008 trades Nov 2011 – Apr 2012After the 60 Minutes report the Office of Congressional Ethics opened a review of whether Bachus engaged in insider trading. Its board voted 6 to 0 to dismiss the allegations, according to a statement from his office, in April 2012.
• Oil price talks of 1971 Jan–Apr 1971Talks between the oil companies and OPEC states in Tehran and Tripoli in early 1971, which raised the tax on oil exports.
• Oil War of 1872 1872Uprising of Pennsylvania oil producers against the South Improvement Company.
• Olson family suit, 2012-13 28 Nov 2012 – 17 Jul 2013Suit by two sons of Frank Olson, who allege he was murdered; dismissed in July 2013 as untimely and waived.
• Open competition inquiries into EssilorLuxottica (mid-2025) 2022 –Inquiries into EssilorLuxottica listed in its 2025 interim report as ongoing, with no finding: one by the Greek authority since 2022, and a 2024 Civil Investigative Demand from the U.S. Federal Trade Commission.
• Operation Anadyr 1962Code name of the 1962 Soviet deployment of missiles and troops to Cuba.
• Operation Crossroads Jul 1946The first U.S. nuclear tests in the Marshall Islands, two blasts at Bikini Atoll in July 1946.
• Operation MONGOOSE Nov 1961 – Nov 1962U.S. covert program from November 1961 that tried to use Cuban exiles and dissidents inside Cuba to overthrow Castro; it ended in November 1962.
• Operation Paperclip 1945Post-war U.S. program that brought at least 1,600 German scientists and their dependents to the United States, through Paperclip and its successor projects.
• Operation Ranch Hand 1962 – 7 Jan 1971U.S. Air Force spraying of herbicides, Agent Orange among them, over South Vietnam, 1962 to January 1971.
• Operation Turquoise 22 Jun 1994 – 21 Aug 1994French-led military operation in Rwanda authorised by the Security Council on 22 June 1994.
• Oppenheimer security clearance case 1954In 1954 the Atomic Energy Commission took away J. Robert Oppenheimer's security clearance. The U.S. Department of Energy vacated the decision in 2022.
• Order Competition Rule proposal 3 Jan 2023 – 17 Jun 2025The SEC proposed in January 2023 to require some retail orders to be exposed to auction before a wholesaler could fill them; it withdrew the proposal in June 2025.
• Oswald in Mexico City, autumn 1963 26 Sep 1963 – 3 Oct 1963Lee Harvey Oswald’s trip to Mexico, 26 September to 3 October 1963, during which he visited the Cuban and Soviet embassies.
• Oswald in New Orleans, summer 1963 May–Sep 1963Lee Harvey Oswald’s months in New Orleans, including his August 1963 encounter with an anti-Castro student group.
• Ottoman officials held on Malta, 1919 to 1921 1919–1921Britain held Ottoman officials on Malta, mostly without trial, and in 1921 gave them up in exchanges for British prisoners held by the Ankara government.
• Ottoman welcome of Spanish exiles, 1492 onward c. 1492Settlement of exiles from Spain in Ottoman towns, and the order to provincial governors to receive them.
• OxyContin deaths reported to Purdue (2001) 2001Early-2001 reports of overdose deaths reached Purdue; the Massachusetts complaint quotes the company’s emails.
• OxyContin launch (1996) 1996Purdue began marketing OxyContin in January 1996, according to the 2007 statement of facts.