evidence: In 1991, China and USSR signed the 1991 Sino-Soviet Border Agreement, which was intended to start the process of resolving the border disputes held in abeyance since the 1960s. However, just a few months later the USSR was dissolved, and four former Soviet republics — Russia, Kazakhstan, Kyrgyzstan, and Tajikistan — inherited various sections of the former Sino–Soviet border. [...] In November 1997, at a meeting in Beijing, Russian President Boris Yeltsin and General Secretary and Chinese President Jiang Zemin signed an agreement for the demarcation of the much longer (over 4,000 kilometres (2,500 mi)) eastern section of the border, in accordance with the provisions of the 1991 Sino-Soviet agreement. [...] - ^ "Return of Heixiazi Island marks end of border dispute". Retrieved 22 September 2024.