The Sino-Russian Border Agreement refers to a series of treaties signed between China and Russia to define and regulate their shared border. The most significant agreements were finalized in 2001 and 2004, resolving long-standing territorial disputes and establishing clear boundaries along the 4,300-kilometer border. This agreement has facilitated better diplomatic relations and cooperation between the two nations. It has also contributed to regional stability, allowing both countries to focus on economic collaboration and security issues, enhancing their strategic partnership in various fields, including trade and military cooperation.