The Israeli military said several people were lightly injured after its air defenses failed to intercept the projectile, which struck a playground in the city.
The Russian president, in a marathon annual news conference, said that he had not yet met with Bashar al-Assad, the ousted Syrian leader who fled to Moscow, but that he planned to.
The ancient city, an early stronghold of opposition to Bashar al-Assad’s oppressive regime, was ravaged by a government crackdown. New York Times correspondents in Homs spoke to people who were reacting to his fall with smiles and tears.