Ukraine"s president has told Sky News that his country cannot stop the war against Russia on its own and said nations must act now before it is “too late”.

Speaking to Sky News’ special correspondent Alex Crawford, Volodymyr Zelensky reiterated his call for the West to impose a no-fly zone. He accused countries of being indecisive on the issue of “closing” the skies against what he called “the Nazis” - and said of Western nations: “You can’t decide to close or not to close... you can’t decide”.

“If you are united against the Nazis and this terror, you have to close. Don’t wait for me ask you several times, a million times. Close the sky. Close the sky and stop the bombing”, - he said, appealing for the world to act faster.

Asked about Western concerns around the potential of a no-fly zone escalating the conflict, and bringing about a direct confrontation with Russia making it worse, he said: “Worse for whom? For our families? No... For them..? Who knows? Nobody knows. But we know that exactly that now is very bad. And in future it will be too late. Believe me, if it”s prolonged this way, you will see... they will close the sky but we will lose millions of people”.

He added: “The third world war will start and only then you will make a no-fly zone - but it will be too late”.