Theresa May in White House, partners with President Trump

UNITED STATES OF AMERICA: British Prime Minister Theresa May has used her official visit to state in strong terms both countries should never go back to the mistakes of the past (Iraq-style intervention) in other countries.

The Prime Minister evoked the relationship between Margaret Thatcher and Ronald Reagan amid a discourse at the yearly Congressional Republican Retreat in Philadelphia, including that "time and again it is the relationship between us that has defined the modern world".

Mrs. May also gave her backing to most of Trump’s foreign policies as she denounces the "malign influence of Iran, vowing to battle Islamic State and promising to "stand up" for the security of Israel.

Mrs May said Mr Trump's triumph would permit the US to be "stronger, greater, and more confident in the years ahead", as she focused on the Brexit vote would re-establish power and autonomy to Britain.

Nevertheless, she forewarned the President over foreign policy positions taken by him amid his campaign, cautioning that he ought to "engage but beware" of Vladimir Putin and Russia and underscoring the work of the UN as needing change, yet fundamental, still.

She told the group of onlookers that the US and UK had a "joint responsibility to lead, because when others step up as we step back, it is bad for America, for Britain and the world".

There must be "no return to the failed policies of the past - the days of Britain and America intervening in sovereign countries in an attempt to remake the world in our own image are over".

Sky News Diplomatic Editor Dominic Waghorn stated: "It's the kind of speech you would expect from a Prime Minister hoping to make the most of what is clearly a lot of goodwill towards the UK, an administration that seems keen on pursuing the special relationship.

"In a sense it was an appeal for wiser counsels to prevail in the Republican Party and a bit of a dig if you like at some of the ideas that Donald Trump has hinted at."

Mrs May visit has made her the first world leader to address the Republican Retreat.

It was obvious before he became president, Mrs May portrayed Mr Trump's policies as "divisive, stupid and wrong", however in her discourse she adulated his electoral triumph even as she voiced contrasts to some of his motivation.

She depicted the Iran nuclear arrangement - which the US President has undermined to tear up - as fundamentally vital for local security and tried to simplicity fears that China will obscure the West on the universal stage.