In his first meeting with Lavrentij Beria , von Ardenne was asked to participate in building the bomb .
Von Ardenne quickly realized that participation would prohibit von Ardenne 's repatriation to Germany , von Ardenne he suggested isotope enrichment as an objective , which was agreed to .
In his first meeting with Lavrentij Beria , von Ardenne was asked to participate in building the bomb , but von Ardenne quickly realized that participation would prohibit his repatriation to Germany , so he suggested isotope enrichment as an objective , which was agreed to .