Large areas of Ukraine suffer from power outages, after a wave of Russian raids.
Almost half of Moldova was without electricity, although the Russian bombardment did not reach it.
The attacks in Ukraine targeted critical infrastructure facilities in the capital, Kyiv. Officials said six civilians were killed in the bombing.
Moscow has recently intensified its attacks on Ukrainian energy facilities, leaving half of the country’s electricity grid idle.
The company that runs Ukraine’s national power grid said the damage to power generation facilities in recent weeks was “enormous,” warning that Ukraine could face prolonged blackouts over the winter months.
Early on Wednesday, sirens sounded across Ukraine warning of an airstrike, followed by reports of explosions in a number of locations.
The Ukrainian Air Force said that more than 70 cruise missiles were launched by Moscow, and the Ukrainian defenses were able to intercept 51 of those missiles.
Ukrainian officials said Russia had also launched five drones.
Ukraine’s nuclear power company, Energoatom, said three of its nuclear reactors had lost internet connection due to a power outage.
In the capital, Kyiv, parts of the city suffered from complete water and electricity cuts, according to Mayor Vitali Klitschko.
Lviv Mayor Andriy Sadovy said schoolchildren had been taken to the bunkers with their teachers – and parents were urged not to take their children out before the sirens ended.
Prior to the reports from Kyiv and Lviv, officials reported that western Ukraine had come under renewed attacks.
The governor of the Mykolaiv region said that many missiles were arriving from the south and east.
Not far away, in the Zaporizhia region, a newborn baby was killed when a missile hit a maternity unit, according to emergency services.
The finger of blame for this attack is pointed at Russia, which has not yet commented on any of Wednesday’s alleged attacks.
Ukrainian President Volodymyr Zelensky accused Moscow of “terrorist acts”.
Zelensky said he had instructed his UN envoy to request an emergency meeting of the Security Council.
Meanwhile, more than half of Moldova suffers from power outages, Deputy Prime Minister Andre Spino announced.
Via Twitter, Spino said the targeting of Ukraine’s infrastructure had caused “widespread blackouts” across Moldova.
Within a few hours, electricity was restored to most areas of the capital, Chisinau, where a third of Moldova’s population lives.
Responding to the power cuts in Moldova, the country’s president, Maia Sandu, said that Russia had “left Moldova in the dark”.
Moldova suffered widespread power outages as a result of attacks on Ukraine on November 15, Deputy Prime Minister Spino said. Mobile phone networks have also been hit hard.
On the other hand, the European Parliament overwhelmingly approved a resolution deeming Russia a “state sponsor of terrorism”, which is non-binding.
The resolution condemns what it described as the deliberate attacks “launched by Russia against Ukrainian civilians, and its destruction of Ukraine’s civilian infrastructure in flagrant violation of human rights and international law.”
Parliament called on member states to take additional steps to isolate Russia internationally and to tighten sanctions against it, and called for work to develop a legal framework that would allow member states to designate state sponsors of terrorism.