WARSAW (Reuters) - If the war in Ukraine causes food shortages in North Africa, this will in turn lead to mass migration to Europe, Poland's president said on Tuesday.

       "If it turns out that there is hunger in North Africa... both Spain and the whole of southern Europe will have a huge migration problem," Andrzej Duda told a panel in Davos. "Today we should focus on Ukraine being able to export its grain."

       (Reporting by Alan Charlish, Pawel Florkiewicz, Marek Strzelecki; Editing by Catherine Evans)