Inter-Korean Basic Agreement
The two Koreas adopted an agreement recognizing each other’s systems and pledging non-aggression, exchanges and cooperation, followed by a joint declaration on denuclearization.
On 13 December 1991 high-level talks in Seoul adopted the Agreement on Reconciliation, Non-aggression, and Exchanges and Cooperation (in force February 1992). It defined inter-Korean relations as "not relations between states but a special relationship formed provisionally in the process toward unification", and pledged mutual recognition of systems, non-aggression and wider exchanges.
On 31 December the two sides also agreed the Joint Declaration on the Denuclearization of the Korean Peninsula, renouncing the testing, production and possession of nuclear weapons.