President Vladimir Putin on Wednesday oversaw a test of Russia's nuclear forces on land, sea and air to rehearse their readiness and command structure.

Russia’s strategic nuclear forces carried out a readiness test supervised by the country’s President Vladimir Putin on Wednesday, the Kremlin said.

The Kremlin stressed on Wednesday that the dates for the face-to-face talks, due to take place in Hungary, "weren't set" and that this would still happen.

At least six people were killed overnight, shortly after the American president announced that he did not "want to have a waste of time" holding a summit with the Russian leader.

President Donald Trump says his plan for a swift meeting with Russian leader Vladimir Putin is on hold because he doesn’t want it to be a “waste of time.”

Russia said on Wednesday that it was still preparing for a potential summit between President Vladimir Putin and US President Donald Trump, though no date had been set and that Putin - like Trump - did not want to waste his time.

The Polish foreign minister said he could not guarantee that Russian President Vladimir Putin's plane would not be forced to land.

President Trump has called off his planned summit with Russian President Vladimir Putin, which was set to take place in Budapest in the coming weeks. The White House said the decision followed what it described as a “productive” call between Secretary of State Marco Rubio and his Russian counterpart,