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 U.S. president.

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.

British Prime Minister Keir Starmer said the drone threat was "a reminder of what Ukraine is facing every day."

Keir Starmer has made a surprise visit to Ukraine to sign a landmark 100-year partnership between Britain and the wartorn nation. The Prime Minister met with Ukrainian President Volodymyr Zelensky as they agreed the historic tie-up.

Sir Keir Starmer has pledged to put Ukraine in the "strongest possible position" in a trip to Kyiv where he signed a "landmark" 100-year pact with the war-stricken country. The prime minister's visit on Thursday was at one point marked by loud explosions and air raid sirens as Ukraine's defence systems intercepted a Russian drone attack.

The British government said Starmer and Ukrainian President Volodymyr Zelenskyy will sign a “100-Year Partnership” treaty in Kyiv covering areas including defense, science, energy and trade. Starmer’s unannounced visit is his first trip to Ukraine since he took office in July.

Ukrainian President Volodymyr Zelensky and British Prime Minister Keir Starmer signed a historic partnership agreement yesterday. The agreement provides for enhanced cooperation in defence and maritime security,