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 has reached a resolution with India on resolving their border conflict and will work to implement solutions, a Chinese foreign ministry spokesperson said on Tuesday. China and India have been in close communication through diplomatic and military channels,