By Olena Harmash KYIV (Reuters) -British Prime Minister Keir Starmer said on Thursday he would give Ukraine the support it needed to put it in the strongest position to fight Russia in 2025, saying before talks in Kyiv with President Volodymyr Zelenskiy: "We mustn't let up".

The Kremlin has dismissed previous Western claims that Russia sponsored acts of sabotage and attacks in Europe

British Prime Minister Keir Starmer arrived in Ukraine Thursday with a pledge to help guarantee the country’s security for a century, days before Donald Trump is sworn in as US president.

British Prime Minister Keir Starmer has arrived in Ukraine’s capital with a pledge to help guarantee the country’s security for a century, days before Donald Trump is to be sworn in as U.S. president

Keir Starmer will meet President Volodymyr Zelensky for talks on strengthening the bond between the UK and Ukraine in the face of Russia’s brutal onslaught

Arriving on Thursday morning, he accompanied Ukrainian President Volodymyr Zelensky to lay flowers at a wall of remembrance for those killed in the war with Russia - telling reporters the UK will "never let up" on giving the necessary support to Ukraine.

The prime minister was speaking to Sky News's political editor Beth Rigby while on a surprise visit to Ukraine on Thursday.

The prime minister said it will help ensure the country is "never again vulnerable to the kind of brutality inflicted on it by Russia".

British Prime Minister Keir Starmer pledged on Thursday to work with Ukraine and allies to offer Kyiv robust security guarantees if a ceasefire is negotiated with Russia, offering more support to President Volodymyr Zelenskiy with a 100-year partnership deal.

The 'historic' 100-year partnership includes £3bn a year in funding, as well as the provision of air defence systems and training for Ukrainian soldiers.

Putin’s forces locked onto French plane as North Korea troops may ‘be dead by April’ - “This aggressive Russian action is not acceptable,” the French defense minister said