Heydrich went on to say that in the course of the "practical execution of the final solution", Europe would be "combed through from west to east", but that Germany, Austria, and the Protectorate of Bohemia and Moravia would have priority, "due to the housing problem and additional social and political necessities". This was a reference to increasing pressure from the Gauleiters (regional Nazi Party leaders) in Germany for the Jews to be removed from their areas to allow accommodation for Germans made homeless by Allied bombing, as well as to make space for laborers being imported from occupied countries. The "evacuated" Jews, he said, would first be sent to "transit ghettos" in the General Government, from which they would be transported eastward. Heydrich said that to avoid legal and political difficulties, it was important to define who was a Jew for the purposes of "evacuation". He outlined categories of people who would not be killed. Jews over 65 years old, and Jewish World War I veterans who had been severely wounded or who had won the Iron Cross, might be sent to Theresienstadt concentration camp instead of being killed. "With this expedient solution", he said, "in one fell swoop, many interventions will be prevented."