Here is the Delhi Declaration from the January 1985 Six-Nation Summit on Nuclear Disarmament. The six countries were Argentina, Greece, India, Mexico, Sweden, and Tanzania.
The full text is too long to paste, but here’s a sample:
We reiterate our appeal for an all-embracing halt to the testing,
production and deployment of nuclear weapons and their delivery
systems. Such a halt would greatly facilitate negotiations. Two
specific steps today require special attention: the prevention of
an arms race in outer space, and a comprehensive test ban treaty.
Plus ca change, etc.