Hi tom, practically a lot of European warships visit Malta , though not all because of the refugee crisis and even then they just pick them up from rubber dinghies and transport them to Italy not to their respective countries, this is a humanitarian mission to save humans. And the Polish warship is maybe on a flag showing visit to various countries and she is showing the flag.... a very large Polish flag was proudly flying from her mast. Stay cool my friend,
regards
Emmanuel.L.(Malta)

A Polish war ship in Malta? Does this make any sense? The Polish government does not accept any refugees.