Washington –President Donald Trump said on Saturday that Germany owed “vast sums of money” to NATO and the US, and that Berlin “should pay.”

Trump’s statements come following his meeting with German Chancellor Angela Merkel in Washington.

Trump took it to twitter where he said: “Nevertheless, Germany owes vast sums of money to NATO & the United States must be paid more for the powerful, and very expensive, defense it provides to Germany!”

The two leaders did not show any signs of agreement on several pending issues, including NATO and defense expenditures.

During a joint press conference with Merkel, Trump complained that other NATO members have not paid their dues for years. He insisted they pay for “their fair share of the defense they receive.”

NATO countries are asked to contribute 2 percent of their GDP to the alliance’s defense spending.

Merkel said that Germany agreed on the need for “increasing expenditure” to meet the 2 percent goal.

Trump then criticized the way the media had dealt with the meeting saying on Twitter also: “Despite what you have heard from the FAKE NEWS, I had a GREAT meeting with German Chancellor Angela Merkel.”

Expenditure was not the only point of disagreement between the two. A German journalist brought up the case of wiretapping and Trump’s accusations that British Intelligence was working with Obama to spy on him.

Despite constant negations and absence of evidence, the US President continued with his allegations and even joked that Merkel had also been a victim of wiretapping.

Since his arrival at the White House, the Republican billionaire had written several controversial tweets, none of which had damaged his credibility as much as the one he wrote on March 4.

He tweeted: “Terrible! Just found out that Obama had my ‘wires tapped’ in Trump Tower just before the victory. Nothing found. This is McCarthyism.”

Media reports reveal each day new findings on Trump’s or his close personnel’s contacts with Russia.

Trump had repeatedly denied any affiliations to the Kremlin, but he could not control the flow of information and therefore decided to attack his predecessor.

Since then, Obama, former intelligence director James Clapper and many democratic and republican officials have denied those allegations.

Attorney General Jeff Sessions had to apologize to the UK for press secretary Sean Spicer’s allegation that the GCHQ had spied on Trump Tower for Obama. Spicer almost caused a diplomatic crisis by defending the president.

On Thursday, Spicer quoted a series of articles that discussed surveillance. He referenced comments made earlier this week on Fox News TV by Andrew Napolitano in relation to Trump’s controversial claim that wiretaps had been installed at his New York residence.

“Three intelligence sources have informed Fox News that President Obama went outside the chain of command. He didn’t use the NSA, he didn’t use the CIA, he didn’t use the FBI and he didn’t use the Department of Justice. He used GCHQ,” Spicer said in the press conference.

British officials were quick to comment on Napolitano’s claims, saying they were “rubbish”.

A government source reportedly said the claim was “totally untrue and quite frankly absurd”.

It told Reuters that under British law, GCHQ “can only gather intelligence for national security purposes” and noted that a US election “clearly doesn’t meet that criteria”.

“As for as wiretapping, I guess by this past administration, at least we have something in common, perhaps,” Trump said during his press conference with Chancellor Merkel, referring to reports that the National Security Agency had tapped Merkel in 2010.

Such incidents do not reassure US Congressmen, including those in Trump’s camp. Trump promised to reveal next week new evidences that prove his allegations.

Chairman of the House intelligence committee, Devin Nunes confirmed Friday that the Justice Department had “fully complied” with the committee’s request.

He did not provide any further details.

FBI Director James Comey is set to testify before the House Intelligence Committee on Monday.

The public hearing is the first of several that the intelligence committees are expected to hold on alleged Russia’s interference in the presidential election.