NATO Secretary General Mark Rutte has finally explained why he called Donald Trump 'daddy', blaming the embarassing moment on a 'language problem' NATO's Secretary General has explained why he called Donald Trump "daddy". Mark Rutte's nickname for the US president went viral after their joint appearance last June. And he was asked about it today following a meeting with Trump at the White House on Wednesday. Rutte claimed it was a "language problem". He told reporters: "In Dutch, you would say – the translation of your father is daddy – and I said, 'sometimes daddy has to be angry. "So...