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
Trials of a new prenatal test for Down's Syndrome have been launched to see if it should be offered to women on the NHS
Zayn Malik has spoken for the first time since quitting 1D saying he was upset to let fans down but that it wasn't "real" to him anymore
Coronation Street actress Samia Ghadie has announced she is expecting her first child with ice dancer Sylvain Longchambon.