Donald Trump made his comments on board Air Force One.

Downing Street has rejected Donald Trump’s claim that Russia’s latest deadly attack on Ukraine was “a mistake”.

The US president made the bizarre comment on board Air Force One on Sunday night.

He said: “I think it was terrible. And I was told they made a mistake. But I think it’s a horrible thing. I think the whole war is a horrible thing.”

However, he did not expand on his theory.

At least 34 people were killed and a further 83 were injured when two missiles struck the town of Sumy as worshippers made their way to Palm Sunday church services.

The strikes were a further blow to Trump’s attempts to broker a peace deal between Russia and Ukraine to end the war,........

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