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Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO)

Last modified: 2023-06-03 by zachary harden
Keywords: comprehensive nuclear-test-ban treaty organization | ctbto |
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[Médecins Sans Frontières Flag] image by Ben Cahoon, 2 April 2018

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About the Flag

The Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) is an international organization that will be established upon the entry into force of the Comprehensive Nuclear-Test-Ban Treaty, a Convention that outlaws nuclear test explosions. Its seat will be Vienna, Austria. The organization will be tasked with verifying the ban on nuclear tests and will operate therefore a worldwide monitoring system and may conduct on site inspections. The Preparatory Commission for the CTBTO, and its Provisional Technical Secretariat, were established in 1997.

The CTBTO logo can be seen at, with photos lower on the page.

More information:
Ben Cahoon, 2 April 2018

The flag is seen here (second from left to right):

It features the logo ( over a sky blue horizontal background.

For additional information go to CTBTO (official website):
Esteban Rivera, 3 April 2018