In March 1990, Thatcher held a Chequers seminar on the subject of German reunification that was attended by members of her cabinet and historians such as Norman Stone, George Urban, Timothy Garton Ash and Gordon A. Craig. During the seminar, Thatcher described "what Urban called 'saloon bar clichés' about the German character, including 'angst, aggressiveness, assertiveness, bullying, egotism, inferiority complex sentimentality. Those present were shocked to hear Thatcher's utterances and "appalled" at how she was "apparently unaware" about the post-war German collective guilt and Germans' attempts to work through their past. The words of the meeting were leaked by her foreign-policy advisor Charles Powell and, subsequently, her comments were met with fierce backlash and controversy.