AlHijjah 08, 1436, September 22, 2015, SPA -- The U.N. General Assembly president said Monday that all countries must contribute to solving the global refugee crisis. "The world has not seen a global humanitarian crisis of this magnitude since the Second World War and with winter approaching in the northern hemisphere, it is only going to get worse," Mogens Lykketoft told reporters in his first formal news conference since taking office last week. "The tragic stories and heart-breaking images we are seeing in the media are only the tip of the iceberg – the manifestation of much bigger issues which only multilateral cooperation and global leadership can solve. This is a global crisis. And it requires a global solution," Lykketoft said. U.N. Secretary-General Ban Ki-moon also voiced concern about the deteriorating situation facing refugees and migrants arriving across Europe. Ban "calls on all European States to ensure that they abide by their international obligations, including the right to seek asylum, and the prohibition of refoulement," his spokesperson said in a statement.