Original: When Hitler committed suicide in April 1945 , Seyss-Inquart declared the setting-up of a new German government under Admiral Karl Dönitz , in which he was to act as the new Foreign Minister , replacing Joachim von Ribbentrop , who had long since lost Hitler 's favour .
Simplified: When Hitler committed suicide in April 1945 , Seyß-Inquart became the Foreign Minister in Admiral Karl Dönitz 's new German government .