German Chancellor Angela Merkel, French President Francois Hollande and Russian President Vladimir Putin have once more urged further talks to solve the crisis in Ukraine, dpa reported. During a telephone call Thursday the three leaders agreed that a ceasefire and another round of talks of the so-called contact group should be held as soon as possible, the Kremlin said. Hollande's office said the three leaders would soon have a four-party telephone conference with Ukrainian President Petro Poroshenko.