Later today Taoiseach Micheal Martin will meet US president Donald Trump in Washington, against a backdrop of Trump’s tariff threats and huge economic uncertainty.
The economic relationship between Ireland and the United States is likely to feature when both leaders face the press.
The recent torrid experience of Ukrainain president Volodymyr Zelenskiy suggests its possible Mr Martin could be in for a difficult day.
So how should the Taoiseach handle Mr Trump?
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Political correspondent Jack Horgan-Jones explains where and how problems may arise.
Then neuropsychologist Ian Robertson suggests some strategies for dealing with Trump’s singular personality.