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.

NATO Secretary General Mark Rutte reaffirmed on Thursday the need to step up support for Ukraine, adding it was vital Russia did not win as it could result in Russian President Vladimir Putin 'high fiving' the leaders of North Korea and China.

NATO Secretary General Mark Rutte has stressed the need to strengthen support for Ukraine, emphasising that it is vital that Russia does not win. Source: Reuters with reference to Rutte at the World Economic Forum in Davos,

Europe should welcome rather than rebuff U.S. President Donald Trump's call for other NATO members to ramp up their military spending, Polish Prime Minister Donald Tusk said on Wednesday, stressing the importance of security to the continent.

The EU's top diplomat and Poland's prime minister said Wednesday that the bloc must heed US President Donald Trump's demand to spend much more on defence -- faced with the "existential threat" posed by Russia.