Ukrainian MP Oleksii Goncharenko is at the forefront of calls for Mr Johnson to take up the post when present Secretary General Jens Stoltenberg steps down next year – and senior figures in Tory ranks believe Mr Johnson has the experience, energy and convictions the position demands.
Mr Johnson has been made an honorary citizen of Odessa in recognition of his support for Ukraine, and President Volodymyr Zelensky expressed “sadness” at the PM’s resignation as Tory leader and described him as a “hero”.
Pressing for Mr Johnson to gain the Nato role, Mr Goncharenko said: “Boris Johnson’s leadership during this war has ensured vital military, economic and humanitarian supplies have been provided to Ukraine. The UK has been one of our most important supporters and has imposed meaningful sanctions on Russia.
“He would be the right person to take over from Jens Stoltenberg as he understands the challenges that Nato and the West faces. He will always support Ukraine in our fight against the 21st century’s Hitler and will support Nato members and Nato goals with the same level of unstinting support.”
A Government minister said: “On the world stage, Boris Johnson has been a fighter for freedom. He has shown his love of liberty at home and around the globe.
“His understanding of European politics, his relationships with our allies on the continent, and his defiant defence of the sovereignty of Ukraine marks him out as a statesman able to lead the continent through this period of challenge, conflict, and change.”
Another Government minister said: “As we all know, despite the hammering the PM has had in the UK, he is a very well respected politician abroad. I am sure there is much more to come from him.
“If he has the support of colleagues in Nato, it could be a perfect future role for him.”
Former Brexit minister David Jones said it was a “brilliant idea” for Mr Johnson to become Nato Secretary General.
He said: “Boris has actually led the western response to Putin. It was Boris who went to Sweden and Finland and urged the leaders of both countries to make applications for Nato membership which of course they did.”