The second round of Ukraine-Russia-US talks have begun in Abu Dhabi, Ukraine’s top negotiator has said.

The two-day trilateral meetings come after president Volodymyr Zelensky said that Russia had exploited a US-backed energy truce last week to stockpile munitions, attacking Ukraine with a record number of ballistic missiles on Tuesday.

Ukraine's peace negotiators have arrived in Abu Dhabi and started their first meetings, Interfax-Ukraine reported on Wednesday citing an unnamed source.

Stay with us throughout the day as we bring you all the latest lines on the second round of trilateral peace talks.

As we have been reporting, the second round of peace talks between Ukraine, Russia and the US is scheduled to begin in Abu Dhabi today.

The talks have been confirmed by officials in Washington, Kyiv and Moscow.

On the agenda remains one critical sticking points which has so far prevented a peace deal: territory.

Specifically, Russian and Ukrainian negotiators have been unable to come to an agreement over the future of Donetsk.

Russian forces currently control roughly three quarters of the territory of the Donetsk region, and almost all of the Luhansk region - the two regions making up the Donbas. Vladimir Putin and his Kremlin aides have been clear in their desire to control the entirety of the Donbas.

But this would mean Kyiv ceding ground which it currently controls in Donetsk. Volodymyr Zelensky has repeatedly ruled this out, and Ukrainian officials do not see a reason to give up any land which Russia has not seized by force.

But Russia, as it continues to pound Ukrainian cities and make marginal gains on the frontline, has said it will not budge on this critical demand.

One person was killed and eight were injured in Russian attacks on the Sumy, Donetsk, Kharkiv and Kherson regions, various Ukrainian authorities said on Wednesday.

In Sumy, where 32 villages came under fire by Russian drones on Tuesday, a 40-year-old man was killed and three others were injured.

The attack also caused damage to six apartment buildings, 13 houses, seven cars and other local infrastructure, Ukrainian police said according to Ukrainska Pravda.

Vadym Filashkin, the chief of the Donetsk military administration, said one person had been injured in the Donetsk region.

In Kherson, four people were injured and several buildings suffered damage.

The city of Kharkiv, along with 11 villages in the surrounding region, also came under Russian attack, with around 16 people reported injured, military administration chief Oleh Syniehubov said.

Ukrainian energy minister Denys Shmyhal has said that a power plant in Kyiv's eastern suburbs had been seriously damaged in overnight Russian attacks, prompting officials to redirect resources to restoring heating to thousands of residents.

Shmyhal, writing on Telegram after a meeting devoted to energy issues, said the plant in Darnytskyi had been used strictly for providing heating for people and was heavily damaged. "This is a war crime by Russia."

Shmyhal described the problems facing Ukraine's energy system as serious and said repairs would take "a considerable time."

"Given the critical situation, the meeting discussed urgent ways to stabilise the situation," he wrote.

"A redistribution is being carried out of repair crews and equipment ... and we are considering options for redirecting reserve heating supplies to buildings subject to longer outages."

The last remaining nuclear arms pact between Russia and the United States is set to expire Thursday, removing any caps on the two largest atomic arsenals for the first time in more than a half-century.

The termination of the New START Treaty would set the stage for what many fear could be an unconstrained nuclear arms race.

Russian president Vladimir Putin declared readiness to stick to the treaty’s limits for another year if Washington follows suit, but President Donald Trump has been noncommittal about extending it.

Trump has repeatedly indicated he would like to keep limits on nuclear weapons and involve China in arms control talks, a White House official who was not authorized to talk publicly and spoke on condition of anonymity said Monday. Trump will make a decision on nuclear arms control “on his own timeline,” the official said.

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Ukraine’s air force has just issued it’s daily update on Russian overnight air attacks.

Russia launched 105 Shahed, Gerbera and Italmas drones overnight since Tuesday, the force said, 88 of which were downed by Ukrainian air defences.

The attack was still ongoing as of 8am local time (6am GMT).

“Hits by 17 UAVs had been recorded at 14 locations and the fall of downed aerial assets (debris) at 5 locations” across the country’s north, south and east, it added in the update on Telegram.

Drones were launched from the Russian cities of Oryol, Bryansk and Primorsko-Akhtarsk, and from occupied Donetsk and Crimea.

A power plant in Kyiv's eastern suburbs has been seriously damaged in overnight Russian attacks, prompting officials to redirect resources to restoring heating to thousands of residents, Ukraine’s energy minister Denys Shmyhal said.

Shmyhal, writing on Telegram after a meeting devoted to energy issues, said the plant in Darnytskyi had been used strictly for providing heating for people and was heavily damaged.

He described the problems facing Ukraine's energy system as serious and said repairs would take "a considerable time."

"This is a war crime by Russia”.

"Given the critical situation, the meeting discussed urgent ways to stabilise the situation," he wrote.

"A redistribution is being carried out of repair crews and equipment... and we are considering options for redirecting reserve heating supplies to buildings subject to longer outages,” he said.