KYIV, Ukraine >> Russian President Vladimir Putin on Monday declared a unilateral 72-hour ceasefire next week in Ukraine to mark Victory Day in World War II as the U.S. presses for a deal to end the 3-year-old war. Kyiv insisted on a longer and immediate truce.

The Kremlin said the truce, ordered on “humanitarian grounds,” will run from May 8 through May 10 to mark Moscow’s defeat of Nazi Germany in 1945 — Russia’s biggest secular holiday. That timing means the truce would start at 2100 GMT, or 2 p.m. PDT, on May 7, lasting until 2100 GMT, or 2 p.m. PDT on May 10.

Ukraine, which has previously agreed to U.S. President Donald Trump’s proposal of a full 30-day ceasefire, dismissed Putin’s move as window dressing.

“If Russia truly wants peace, it must cease fire immediately,” Ukrainian Foreign Minister Andrii Sybiha said, according to the ministry. He emphasized that Kyiv is ready for a “lasting, reliable, and complete ceasefire” for at least 30 full days.

“Why wait for May 8? If we can cease fire now from any date and for 30 days — so that it is real, and not just for a parade,” he said without specifying whether Ukraine would be ready to accept the Moscow-proposed truce.

The Kremlin had urged Ukraine to follow suit.

“Russia believes that the Ukrainian side should follow this example,” it said, warning that “in case of violations of the ceasefire by the Ukrainian side, the Russian armed forces will give an adequate and efficient response.”

Putin previously announced a unilateral 30-hour Easter ceasefire and Ukraine voiced readiness to reciprocate any genuine truce at the time, but it said Russian attacks continued. Moscow, in turn, accused Ukraine of failing to halt its attacks.

Russia and Ukraine had also earlier pledged to observe a 30-day halt on strikes on energy infrastructure brokered by the Trump administration, but they repeatedly accused each other of massive violations until the measure expired.