MOSCOW, July 5 -- Donald Trump's two Ukraine envoys will continue their mediation work and remain ready to travel to Moscow, Kremlin aide Yury Ushakov said Saturday after Vladimir Putin and Trump spoke by phone.

Ushakov said Trump "reaffirmed his readiness to facilitate a fast end to hostilities and the search for peaceful solutions to overcome the crisis." His special representatives, Steve Witkoff and Jared Kushner, "will continue their mediation efforts and are ready to come to Moscow at a convenient time," the Kremlin aide told reporters. The formulation keeps the timing formally in Moscow's hands while keeping the offer standing.

A Moscow visit by Witkoff has occurred previously. The willingness to repeat it signals that the bilate...