NATO Secretary General Mark Rutte is facing a ferocious storm of social media backlash following a deeply deferential Oval Office sit-down with President Donald Trump.

The NATO chief spent his high-profile visit showering the President with effusive praise, triggering fury back home. 

Disgusted European critics took to X in droves to pan the performance, roundly branding Rutte's behavior as 'bootlickin' and 'gross obsequiousness.'

One outraged user lamented that the Secretary General 'will never get the stink of his capitulation to Trump,' while another flatly declared that 'Rutte has got to go... he is always sucking up to Trump.'

Rutte's affectionate 'Daddy' nickname for Trump went viral after their joint appearance last June, although he later told the Daily Mail it was a 'language problem' on his end.

During today's Oval office meeting, Rutte went so far as to present custom data charts designed to flatter Trump and his political legacy. 

Standing before presentation boards like a man delivering a corporate pitch, Rutte coined the phrase 'the Trump trillion' crediting President Trump helping European allies boost defense spending.

Rutte told the room that Europe and Canada have added roughly $1.2 trillion in defense spending since Trump first entered office, crediting Trump with achieving a feat unmatched since the Eisenhower administration.

The flattery didn't stop there.

Rutte tied European defense purchases directly to American factories, boasting that half of Europe's defense industrial output is poured straight into the United States, supporting 'real jobs, real people' like those at Trump's Pennsylvania campaign rallies.

To cap off the gushing display, Rutte looked at the assembled press corps and anointed Trump as not just the President, but the 'leader of the free world' taking the necessary leadership role on the global stage.

A visibly pleased Trump welcomed the tidal wave of praise, returning the favor by calling Rutte a 'great guy, great leader,' and repeating that 'everybody respects him.'

But the President still refused to let the rest of the alliance off the hook.

Trump fiercely aired his long-standing grievances, blasting Spain as a 'horror show' because they 'think they're in for a free ride,' while taking furious swipes at Italy, Germany, France and the UK. 

Trump even made sure to let everyone know that his upcoming attendance at the annual alliance summit was a personal favor to Rutte, stating he 'would not have gone for most people' but was making the trip strictly 'out of respect' for the chief, while sternly warning that he expects absolute 'loyalty' from Europe.

This meeting comes at a crucial moment - just two weeks before NATO's annual summit kicks off in Ankara, Turkey, and right as the Pentagon reviews whether to slash the US military footprint across Europe.

Trump has been a fierce, long-standing critic of NATO, repeatedly hammering home the fact that hard-pressed American taxpayers shoulder an unfair burden of Europe's defense costs.

The only thing that European allies could do to make it better, was their 'loyalty' Trump said today. 

His grievances have reached a fever pitch since the recent war with Iran, with Trump fuming behind the scenes that several European member states completely ignored his urgent directives to help restart crucial oil trade routes through the closed Strait of Hormuz.

Today marks Rutte's fifth face-to-face meeting with Trump since the President took back the White House last year. 

After their meeting, Rutte spoke with reporters outside the White House insisting he has confidence in Trump’s commitment to NATO.