Russia has been accused of preparing to test a new nuclear-armed missile just hours before Vladimir Putin will meet with Donald Trump to discuss the end of the Kremlin's war with Ukraine.

Satellite images have shown that Russia's Pankavo nuclear test site has had an increase in activity in recent weeks.

Putin and Trump will meet in Alaska later today, just 2,000 miles away from the site on the Novoya Zemlya archipelago.

The site has also seen an increase in equipment and personnel, including ships and aircraft associated with earlier testing of 9M730 Burevestnik.

A security source told The Telegraph that Russia was preparing a test of the Burevestnik missile.

However, Moscow fired back by issuing a chilling warning about the missile having an unlimited range.

The testing has seemingly been carried out in the lead-up to Mr Trump's Anchorage meeting with President Putin.

Russian President Vladimir Putin

"We can see all of the activity at the test site," Jeffrey Lewis, who is analysing the satellite images, said.

"Which is both huge amounts of supplies coming in to support operations and movement at the place where they actually launch the missile."

Mr Lewis, who is part of the California-based Middlebury Institute of International Studies, also said a test could be carried out as soon as this week.

Today's meeting between President Putin and Mr Trump will take place at a US Air Force base on the Last Frontier.

Satellite images show a number of vehicles and personnel at the site

However, President Putin sat down for a meeting in Magadan in Russia's Far East for a meeting with its local governor just before jetting off for the crunch talks.

The summit, scheduled for 8.30pm, will aim at setting up a peace deal between Russia and Ukraine.

It will also look to ensure a lasting ceasefire between the two neighbouring countries.

Mr Trump told reporters on Thursday in the Oval Office: “I am President, and he’s not going to mess around with me.”

Further satellite images captured of the site

The US President also admitted that he expected the meeting with President Putin to be followed up by a summit with Ukrainian President Volodymyr Zelensky.

And European leaders have also expressed a desire to have some involvement in negotiations.

“The more important meeting will be the second meeting that we’re having," Mr Trump said.

"We’re going to have a meeting with President Putin, President Zelensky, myself and maybe we’ll bring some of the European leaders, maybe not."

The two leaders pictured in 2018 | GETTY

Ukraine's Odesa MP Oleksiy Goncharenko had earlier said that he feared a deal being made without Ukraine.

That sentiment was shared by Prime Minister Sir Keir Starmer, who met with Mr Zelensky at Downing Street on Thursday.

However, ahead of today's meeting, Mr Trump also held talks with Belarusian leader Aleksandr Lukashenko.

He said: "The purpose of the call was to thank him for the release of 16 prisoners.

"We are also discussing the release of 1,300 additional prisoners. Our conversation was a very good one."