India and China have reached an agreement on military disengagement along their disputed border, New Delhi said, a step toward reducing frictions between the nuclear-armed neighbors that comes as both countries’ leaders arrive in Russia for a summit.

Four years ago, several soldiers from both sides were killed in a bloody melee. Any thaw between the countries could have global implications.

China and India, nuclear-armed neighbors, have had thousands of troops facing off in a contested region of the Himalayas since 2020, when skirmishes led to the first deadly clashes in four decades. In October,