DONALD TRUMP has launched a blistering attack on Germany as he stepped up demands for Nato allies to contribute more to their collective defence.

Arriving in Brussels for a two-day alliance summit, the US president said it was “totally inappropriate” that Germany was paying billions of dollars to Russia for oil and gas while spending little over 1% of its GDP on defence.

He said that the deal meant that Germany was now “totally controlled” by Moscow.

Mr Trump said: “I think it is very sad when Germany makes a massive oil and gas deal with Russia. We are supposed to be guarding against Russia and Germany goes out and pays billions and billions dollars a year to Russia.

“We are protecting Germany, we are protecting France, we are protecting all of these countries and then numerous of the countries go out and make a pipeline deal with Russia where they are paying billions of dollars into the coffers of Russia. I think that is very inappropriate.

“It should never have been allowed to happen. Germany is totally controlled by Russia because they will be getting 60 to 70% of their energy from Russia and a new pipeline.

“You tell me if that’s appropriate because I think it’s not. On top of that Germany is just paying just a little bit over 1% whereas the United States is paying 4.2% of a much larger GDP. So I think that’s inappropriate also.”

Mr Trump’s comments, at a meeting with Nato secretary general Jens Stoltenberg ahead of the main summit, appeared to set the stage for another stormy international gathering after last month’s G7 meeting in Quebec ended in acrimonious disagreement.

Mr Stoltenberg appeared to be taken aback by the ferocity of his onslaught, insisting alliance members were committed to stepping up their defence spending while acknowledging they needed to do more.

“Even during the Cold War, Nato allies were trading with Russia,” he protested.

However, the president was not deterred, saying: “I think that these countries have to step it up not over a 10-year period, they have to step it up immediately. Germany is a rich country.

“Germany is a captive of Russia. They are getting so much of the oil and gas from Russia.”

Ahead of the summit, Theresa May was keen to emphasise Britain’s readiness to contribute, announcing 440 extra troops for the Nato mission in Afghanistan.

“I think that shows when Nato calls the UK is one of the first to step up,” the Prime Minister said as she arrived in Brussels.

Mrs May insisted the UK’s commitment to Nato remains “as steadfast as ever”.

Mrs May said the UK’s approach gave it “a powerful voice” in Nato.

“I’m sure at this summit we will be talking, President Trump and all the allies around the table, about how we can ensure that Nato is adaptable and flexible to meet the threats of the future,” she added.

The extra troops, from the Welsh Guards, will bolster the UK-led Kabul Security Force which provides protection for Nato civilian staff engaged in capacity-building programmes in Afghanistan, as well as mentoring Afghan forces in the capital.

They will begin deploying in August with a second contingent to follow in February taking the total UK military presence in the country to 1,100.