German Chancellor Angela Merkel is visiting the White House for a key summit with President Donald Trump.
Nato, trade and Ukraine are high on the agenda, but the focus is also on how two leaders with hugely contrasting ideas and leadership styles interact.
Mr Trump has called Mrs Merkel’s migration policy “catastrophic”, while she has criticised his planned travel ban on several mainly Muslim nations.
The visit was scheduled for Tuesday but had to be postponed due to a snowstorm.
The leaders are holding more than two hours of talks, followed by a working lunch.
There was a warm reception as Mrs Merkel arrived, although it was a little awkward as they posed stiffly for photographs inside the White House.
Mr Trump said they had been discussing a myriad of issues, adding: “Send a good picture back to Germany, please.”
The summit has been highly anticipated given that the two leaders have publicly differed on several key issues.