The leader of Greece's junior coalition party urged a newly appointed transport minister to resign on Wednesday, in a row over whether he had posted offensive tweets online. "Until the truth is clarified on anti-semitic and racist posts, the deputy minister will facilitate (the issue) with his resignation," said Panos Kammenos, the leader of the Independent Greeks party. The minister, Dimitris Kammenos, was among a new cabinet of ministers sworn in earlier Wednesday under Prime Minister Alexis Tsipras.