MOSCOW — U.S. Secretary of State John Kerry on Tuesday accepted Russia’s long-standing demand that President Bashar Assad’s future be determined by his own people, as Washington and Moscow edged toward putting aside years of disagreement over how to end Syria’s civil war.

“The United States and our partners are not seeking so-called regime change,” Kerry told reporters in the Russian capital after meeting President Vladimir Putin. Kerry said Assad, accused by the West of massive human rights violations and chemical weapons attacks, won’t be able to steer Syria out of more than four years of conflict.

But after a day of discussions with Assad’s key international backer, Kerry said the focus now is “not on our differences about what can or cannot be done immediately about Assad.” Rather, it is on facilitating a peace process in which “Syrians will be making decisions for the future of Syria.”