Source: wikibot/partial-nuclear-test-ban-treaty
= Partial Nuclear Test Ban Treaty
{wiki=Partial_Nuclear_Test_Ban_Treaty}
The Partial Nuclear Test Ban Treaty (PTBT), also known simply as the Partial Test Ban Treaty (PTBT), is a landmark arms control agreement that was opened for signature in 1963 and came into force in 1964. The treaty aims to prohibit all nuclear tests in the atmosphere, underwater, and in space, but it does not ban underground nuclear tests.