The Prime Minister said the US president’s shift in position was “good news” as he spoke with local residents on a visit to Hertfordshire on Thursday.
“I think you will have noticed that the last few days have been incredibly serious in relation to big things happening on the world stage,” he said.
“And you may have seen but it is a good thing that yesterday, the threat of tariffs against the United Kingdom was lifted and now we can start hard yards and finding a way forward on security in the Arctic, which may seem a long way away, pretty remote, but actually it does matter to all of us in terms of the safety and security of our country.
“And we’ve got through the last few days with a mix of British pragmatism, common sense, but also that British sense of sticking to our values and our principles.
“But now, as I say, the hard yards of actually finding a better way for security for our country, for Europe and across the globe.”