Transatlantic military alliance chief echoes Ukrainian leader Volodymyr Zelenskyy in stinging remarks at the World Economic Forum.

NATO Secretary-General Mark Rutte warned that restoring the alliance's credibility after a Russian victory in Ukraine could require trillions of dollars.

North Atlantic Treaty Organization Secretary General Mark Rutte discusses the alliance's defense spending goals and what the new Donald Trump administration could mean for global security. He also discusses the conflict between Russia and Ukraine and the need to reach "a good deal.

NATO's Secretary-General Mark Rutte hailed newly inaugurated U.S. President Donald Trump's warning on Wednesday that Russia could expect more tariffs and sanctions if it did not end the war in Ukraine.

NATO Secretary-General Mark Rutte has warned that a Russian victory over Ukraine would undermine the dissuasive force of the world's biggest military alliance and could cost trillions of dollars to restore the organization's credibility.

The NATO secretary general said the alliance needs to urgently step up development and production.

Welcome to CNBC’s live blog covering all the latest news, views and action on day 3 of the World Economic Forum in Davos, Switzerland.

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The head of Nato has said “crazy” ethical investing rules are thwarting Europe’s efforts to ramp up defence spending.

Russian President Vladimir Putin has described US President Donald Trump’s threats of tariffs and sanctions against Russia as “smart and pragmatic.”

Our task is to ensure Ukraine has the best possible position in the negotiations, says NATO Secretary General in Davos during the 55th annual meeting of the World Economic Forum.

Leading business and political figures attending the World Economic Forum meeting in Davos, Switzerland, have discussed and debated topics such as technology, tariffs, climate change, Ukraine, Gaza and the global economy this week.