Germany's Chancellor Angela Merkel stepped into a diplomatic row that began when a senior US official was secretly recorded insulting the European Union.
Victoria Nuland swore about the EU during a conversation with the US Ambassador to Ukraine.
The exchange was apparently bugged and has since been posted online, with the Americans blaming the Russians.
ITV News Washington Correspondent Robert Moore reports:
More top news
Theresa May will attend a key EU summit on Thursday, just hours after her authority was diminished by a humiliating House of Commons defeat.
The best of the sunshine will be in the east.
The British territory will allow only domestic partnerships after senators approved the Domestic Partnership Act by an 8-3 vote.