18 Aug 2010 – Pakistan: Islamic Movement of Uzbekistan announces death of its leader Tahir Yuldashev reportedly killed on 27 Aug 09.
19 Aug 1919 – Afghanistan: Afghanistan gains independence from the United Kingdom control over foreign affairs and known as Afghanistan Independence Day.
20 Aug 1998 – Afghanistan, Sudan: US cruise missiles strike against terrorist locations in retaliation for African bombings.
22 Aug 2011 – Pakistan: Atiyah Abd al-Rahman al-Qaeda second in command was killed in an explosion in North Waziristan.
23 Aug 2013 – United States: Nidal Malik Hasan convicted of 13 counts of premeditated murder in an attack at Fort Hood, Texas on the 5 Nov 09.
23 Aug 1996 – Worldwide: Osmam bin Laden issues first declaration of war against the United States and the West, calling for the death of Americans wherever they are found.
26 Aug 2011 – Nigeria: Vehicle bombing of United Nations headquarters in Abuja kills 23 and injures more than 80; Boko Haram claims responsibility.
Dates are taken from the NCTC terrorist calendar and 361 Security Significant dates.