This blog is now closed. See our latest full report: Trump claims planned attack on Iran postponed after Tehran makes new proposal to end war Friedrich Merz has been embroiled in a row with Donald Trump over his war on Iran ever since the German chancellor suggested the Trump team was being outplayed in its negotiations with Tehran and said he would not advise his children to study or work in the US in the current climate. The Guardian’s Berlin correspondent, Deborah Cole, has looked at the declining relationship between the two leaders in this story.