Papua New Guinea

1925 Geneva Protocol
Deposit of instruments of succession (Paris) 11 December 1980 *
Antarctic Treaty
Deposit of instruments of succession (Washington) 16 March 1981 *
Anti-Personnel Mine Ban Convention
Deposit of instruments of accession (UN) 28 June 2004  
Biological Weapons Convention
Deposit of instruments of accession (Moscow) 13 November 1980  
Deposit of instruments of accession (London) 27 October 1980  
Deposit of instruments of accession (Washington) 16 March 1981  
Chemical Weapons Convention
Signature (UN) 14 January 1993  
Deposit of instruments of ratification (UN) 17 April 1996  
Comprehensive Nuclear-Test-Ban Treaty
Signature (UN) 25 September 1996  
Convention on Environmental Modification Techniques (ENMOD)
Deposit of instruments of accession (UN) 28 October 1980  
Outer Space Treaty
Deposit of instruments of succession (Moscow) 13 November 1980 *
Deposit of instruments of succession (London) 27 October 1980  
Deposit of instruments of succession (Washington) 16 March 1981 *
Partial Test Ban Treaty
Deposit of instruments of succession (Moscow) 13 November 1980 *
Deposit of instruments of succession (Washington) 16 March 1981 *
Deposit of instruments of succession (London) 27 October 1980  
Treaty of Rarotonga
Signature (PIFS) 16 September 1985  
Deposit of instruments of ratification (PIFS) 15 September 1989  
Treaty on the Non-Proliferation of Nuclear Weapons (NPT)
Deposit of instruments of accession (Moscow) 16 February 1982  
Deposit of instruments of accession (Washington) 25 January 1982  
Deposit of instruments of accession (London) 13 January 1982