New EU chiefs visit Kiev on first day of mandate

The EU's new top diplomat Kaja Kallas and head of the European Council Antonio Costa arrived in Kiev on Sunday in a symbolic show of support for Ukraine on their first day in office.

"We came to give a clear message that we stand with Ukraine, and we continue to give our full support," Costa told media outlets accompanying them on the trip.

The European Union's new leadership team is keen to demonstrate it remains firm on backing Kiev at a perilous moment for Ukraine nearly three years into its fight against Russia's all-out invasion.

Questions are swirling around the future of U.S. support once Donald Trump assumes office in January and there are fears he could force Kiev to make painful concessions in pursuit of a quick peace deal.

As winter begins Russia has unleashed devastating barrages against Ukraine's power grid and on the frontline Kiev's fatigued forces are losing ground to Moscow's grinding offensive.

"The situation in Ukraine is very, very grave," Kallas, a former prime minister of Estonia, said. "But it's clear that it comes at a very high cost for Russia as well."

The new EU leaders, the bloc's top officials along with European Commission chief Ursula von der Leyen, held talks with Ukrainian President Volodymyr Zelensky.

Zelensky on Nov. 30 appeared to begin staking out his position ahead of any potential peace talks.

He called on NATO to offer guaranteed protections to parts of Ukraine controlled by Kiev in order to "stop the hot stage of the war," and implied he would then be willing to wait to regain other territory seized by Russia.

"If we speak ceasefire, [we need] guarantees that Putin will not come back," Zelensky told Britain's Sky News.

Kallas said that "the strongest...