Mark Rutte's comments come a day after Putin rejected US proposals for peace in Ukraine after talks with US negotiators in Moscow.

In talks with Russia, European officials say that President Trump’s advisers have positioned the U.S. as an independent arbiter rather than as the leading voice of NATO.

NATO Secretary-General Mark Rutte brushed off fresh concern about the United States’ commitment to the military organization on the eve of a meeting of allied foreign ministers focused on Russia’s war

After being blindsided by President Donald Trump’s 28-point plan last month, some Europeans have expressed extreme disquiet at being apparently sidelined in talks.

Ukraine's desire to join Nato is rooted in its pursuit of reliable security guarantees. With a smaller military and defence budget compared to Russia, Ukrainian officials argue that Nato offers the best protection available.

The Russian President argued that established principles of international security state that the safety of one nation cannot come at the cost of another.

President Trump’s special envoy Steve Witkoff and Jared Kushner held a marathon round of Ukraine peace talks Tuesday with Russian President Vladimir Putin — though they ended with a statement from the Kremlin that parts of the proposal remain “unacceptable.