Ukraine reported explosions on Wednesday in what it said were Russia's latest attacks with Iranian-made drones.
Kyrylo Tymoshenko, an aide to President Volodymyr Zelenskyy, said two buildings were damaged in Kyiv and a nearby suburban home was hit.
Officials said between 10 and 13 Shahed drones were shot down by air defences, and the damage appeared to be limited.
Mr Tymoshenko, however, warned that "the danger is not over yet" and told people to stay in shelters.
Ukraine's air force said the kamikaze drones were launched by Russia from east of the Sea of Azov.
"Today, the Ukrainian air defence took the terrorists down a peg," the Defence Ministry said.
Iran last month admitted supplying drones to Russia but claimed it was done before the war in Ukraine.
Britain on Tuesday accused Iran and Russia of making a "sordid deal" as it announced new sanctions against both countries.
The drone strikes came shortly after Mr Zelenskyy raised the alarm about unexploded mines and ordnance after 10 months of fighting.
In an address to New Zealand's parliament, he reported significant damage to Ukraine's rivers and forests and said 174,000 square kilometres of land were contaminated with explosives.
"The destroyed economy and infrastructure can be rebuilt. It takes years. But you cannot rebuild destroyed nature," he said.
"There is no real peace where any child can die from a hidden Russian anti-personnel mine. There is no real peace where the consequences of war in the form of poisoned groundwater can destroy normal life in several countries."
The Ukrainian military's general staff separately reported missile strikes in the Kharkiv, Donetsk and Zaporizhzhia regions over the past day.
The military claimed to have destroyed another four Russian tanks and repelled attacks in Kharkiv, Donetsk and Luhansk.
Ukraine conflict - in pictures
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The coffin of Valeriy Krasnyan is brought out of St. Michael's Golden-Domed Monastery in Kyiv. Getty Images -
Repairmen work near a residential building damaged following a missile attack in Vyshgorod, outside of Kyiv. AFP -
An elderly man walks in front of a residential building damaged following a missile attack in Vyshgorod. AFP -
A boy kisses a dog while he charges his phone at the heating tent dubbed a Point of Invincibly in Bucha, Ukraine. AP -
A couple uses a laptop in the heating tent. AP -
Workers dig out a tire from the rubble of a destroyed storage building at a grain processing center so they can use it for repairs in Siversk, Donetsk region. Reuters -
The Chernihiv region found itself on the frontline of Russia's invasion in February, when Moscow's forces were attempting to quickly seize Kyiv. Getty -
Russia ultimately retreated from northern Ukraine to focus its attack on the east and south. Getty -
The city of Chernihiv on November 28, 2022 in Chernihiv, Ukraine. Getty -
A worker fits in new windows of a building in Chernihiv. Getty -
People receive food from AFAT - Disaster and Emergency Management Presidency in Chernihiv. Getty -
The people Chernihiv queue up for hot food. Getty -
Oleksandr Antonenko stands on a balcony of his apartment damaged by a recent Russian military strike in Kherson. Reuters -
Mr Antonenko and his mother Liudmyla inside their apartment recently damaged by a Russian military strike in Kherson. Reuters -
A woman walks in an underpass in Kyiv, on November 26, 2022. AFP -
Friends hug after the arrival of a train in the southern city of Kherson. Getty -
Residents sort through donated clothing at an aid centre in Kherson. Getty -
A Ukrainian soldier stands with a machinegun near Liman in the Donetsk region. AP -
Children attend a physical education class at Spilno School in Kyiv. Getty -
A woman embraces her friend, a soldier in the Ukrainian army, in Kherson. AFP -
Residents inspect a crater left by a Russian military strike in the village of Komyshuvakha in the Zaporizhzhia region. Reuters -
Resident Tetiana Reznychenko walks past a work by world-renowned graffiti artist Banksy, on the wall of a destroyed building in the Ukrainian village of Horenka. Reuters -
Ukrainian soldiers fire artillery at Russian positions near Bakhmut in the Donetsk region. AP -
A fisherman sails his boat on the Dnipro as black smoke rises from an oil reserve in Kherson. AFP
