배경 때문에 그는 국제정치에서 규범을 중시하며, "자신의 행동을 인도하는 나침반이 법무장관 시절에는 헌법이었고, 외무장관 때는 규범적 질서"라고 말한다.
Because of his background, he values norms in international politics, saying, "The compass that guides one's actions was the constitution when he was the Minister of Justice, and the normative order when he was the Minister of Foreign Affairs."