02 May 2011 – Pakistan: Osama Bin laden, the leader of al-Qaeda and responsible for the 11 September 2001 attacks in the United States is killed by US forces in Abbottabad.
03 May 2006 – United States: Zacarias Moussaoui sentenced to life imprisonment for aiding the 9/11 attacks.
12 May 2003 – Saudi Arabia: Three compounds housing westerners were attacked by terrorists in Riyadh, Saudi Arabia. The Al Hamra Oasis village, Jadawel compound and the Vinnell compound were attacked. The three attacks resulted in 35 people killed and over 160 injured.
14 May 1948 – Israel: Founding of the state of Israel.
Dates are taken from the NCTC terrorist calendar and 361 Security Significant dates.