Several people were injured in Russian firing on a residential part of the eastern Ukrainian city of Kharkiv and the neighbouring city of Vovchansk, officials said on Saturday.
In Kharkiv, five people were injured in artillery fire on a residential area, Mayor Ihor Terekhov said on Telegram.
In Vovchansk, Russian attacks caused severe damage. "Unfortunately, the city of Vovchansk has been practically completely destroyed by the enemy," Security Council member Andrey Kovalenko said on Telegram.
Ukraine is managing to retain control of Vovchansk despite the repeated attacks, he said.
Ukraine is trying to repel the Russian invasion launched in 2022, but Kiev is at a disadvantage due to restrictions on using US weapons, according to a new assessment.
Russia exploits these restrictions by launching attacks from protected areas near the Ukrainian border, according to the Washington-based Institute for the Study of War (ISW).
Ukrainian President Volodymyr Zelensky has called for permission to use US weapons on Russian territory, which is currently denied by the United States to avoid escalation.
The US approach to date has severely limited Ukraine's ability to defend itself against Russian attacks in the north of the Kharkiv region, it said.
According to the Pentagon, the US is providing the weapons so that Ukraine can liberate its occupied territories, but not for attacks on Russia.
Ukraine's goal is to attack bases in Russia with Western weapons in order to destroy them even more effectively than with its own less powerful drones and missiles.
Russia, on the other hand, is warning of an escalation in the war if weapons from NATO countries are used against them.
However, Russia's border region regularly comes under fire and earlier on Saturday, an explosion was heard earlier in Belgorod.
Regional governor Vyacheslav Gladkov told residents to take shelter via his Telegram channel after the blast. It came after a missile alert, the Russian state news agency TASS reported early on Saturday morning.
Moscow launched its full-scale invasion of Ukraien in February 2022, after illegally occupying Crimea in 2014.
Zelensky reiterated his determination to push back the Kremlin as he marked the 80th anniversary of the deportation of the Crimean Tatars by the Soviets, drawing comparisons with Russia's occupation of Crimea.
"Today, as we commemorate the victims of the deportation of the Crimean Tatars and condemn Russia's abuse of Crimea, we feel that Russian evil is not and will not be all-powerful," he said in his evening video address.
Soviet dictator Josef Stalin had the Crimean Tatars deported to Central Asia in present-day Uzbekistan on May 18, 1944, due to their cooperation with the Wehrmacht and the German occupying forces.
They were only allowed to return after 1989 and now say their human rights were disregarded by Russian occupying forces.
"The occupier's time on our land is limited, and its expulsion is inevitable," Zelensky said.
Russia's occupation of Crimea in 2014 was a test of resolve for the world, he said. "There was no adequate response then, and Putin decided he could outgrow Crimea and do more evil with impunity."
But with the invasion of Ukraine over two years ago, the Ukrainians' will to resist was awakened, he said.
The historical point at that time with the deportation of the Crimean Tatars will never again be a marginal note in history for Ukraine. "Moscow will never have a chance to conquer our country, our people, our consciousness and our history," said Zelensky.