President Vladimir Putin is open to peace in Ukraine and intense work is going on with the United States, but the conflict is so complicated that the rapid progress that Washington wants is difficult to achieve,

A senior Kremlin official says clinching a deal to end the war between Russia and Ukraine “is far too complex to be done quickly.”

President Vladimir V. Putin of Russia ordered a three-day unilateral cease-fire in Ukraine next week, the Kremlin said on Monday, soon after President Trump reiterated his frustration with Russia’s refusal to stop the war.