The former First Minister also insisted Britain was too weak to secure a favourable deal with Donald Trump and the newly inaugurated President would exploit the vulnerable state of the UK.
Mr Salmond’s comments came after Theresa May’s announced she would meet President Trump on Friday to discuss reducing trade barriers before Brexit as well as the future trading relationship between the US and the UK.
Arguing the Republican billionaire would turn on Mrs May the second she stood up for British interests, Mr Salmond told Pienaar’s Politics: “Everything is hunky-dory with the Donald if you agree with him.
“As long as things are going his way then he is nice but as soon as there is a disagreement, as soon as Theresa May tries to stick up for the UK’s interest, once you get to that point a different character emerges and it emerges very quickly.
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Alex Salmond suggested Theresa May was ‘desperate’ for reaching out to the US President
“You should never ever do a deal with him from a position of disadvantage, you should never go into a relationship with Donald Trump from a position of weakness because if you do, you’ll end up losing not just a monopoly board but every property in it will be mortgaged.”
The European Union-loving politician also insisted the PM’s willingness to do a deal with the outspoken President proved she was getting desperate to secure the UK’s position in the world as she prepares to trigger Article 50.
Adding Mr Trump had probably not forgotten the things Mrs May’s Cabinet had said about him ahead of the November elections, Mr Salmond said past remarks would haunt the negotiations.
He told the BBC Radio5 show: “Stop treating him like a fool, there seems to be this assumption in the Government if they do enough phoning to the Trump administration that we will somehow be unaware of what Theresa May said about him in the past.
It is a sign of the Prime Minister’s desperation
“What her staff have said about him in the past. What Boris Johnson said about him in the past.
“Theresa May has got herself into a position, she is rushing headlong into a special relationship with a President who has far more people demonstrating against him, than who attended his inauguration.”
The former SNP leader added: “This is a very very difficult special relationship and it is a sign of the Prime Minister’s desperation.”
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Mr Salmond’s remarks come as the PM confirmed on the Andrew Marr Show that she was jetting off to Washington this week to meet with the US President.
The Prime Minister said she could discuss reducing trade barriers before Brexit as she confirmed she was to be the first world leader to meet the President next week.
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Mrs May said: “We can look at areas even in advance of being able to sign a formal trade deal. Perhaps we could look at barriers to trade at the moment and remove some of those barriers to open up that new trading relationship.”
Despite President Trump delivering a thundering speech at his inauguration where he vowed to put America first, the PM said she was “confident” of striking a trade deal.
Mrs May said: “I shall be meeting him on Friday and talking to him. There will be many issues for us to talk about because obviously, the special relationship between the UK and the US has been strong for many years.
“We will have an opportunity to talk about our possible future trading relationship but also some of the world challenges that we all face. Issues like defeating terrorism, the conflict in Syria.
“What I think is important is that when I sit down with Donald Trump, I’m going to be able to talk about how we can build on that special relationship.”