Wikipedia:Selected anniversaries/February 23

February 23: Defender of the Fatherland Day in Russia; Mashramani in Guyana (1970); National Day in Brunei (1984).

• 1820 – British authorities arrested the conspirators of the Cato Street Conspiracy, an attempt to murder Prime Minister Lord Liverpool (pictured) and all the British cabinet ministers.

• 1903 – The Cuban-American Treaty was finalized, allowing the United States to perpetually lease Guantánamo Bay from Cuba for the purposes of operating coaling and naval stations.

• 1945 – American photographer Joe Rosenthal took the Pulitzer Prize-winning photograph Raising the Flag on Iwo Jima during the Battle of Iwo Jima in World War II, an image that was later reproduced as the U.S. Marine Corps War Memorial.

• 1947 – The International Organization for Standardization (ISO) was founded. It is responsible for worldwide industrial and commercial ISO standards.

• 2005 – The controversial French law on colonialism was passed, requiring lycée teachers to teach "the positive role" of French colonialism to their students.

More anniversaries:

• February 22
• February 23
• February 24