She should never have been given a security clearance and provided access to United States classified information in the first place.
My recent account of the career of Dr. Lani Kass (photo) was based on what has appeared about her in the public record and media, including her own comments regarding national defense and security policy. To recapitulate, Kass was born, raised, and educated in Israel. She has a PhD in Russian studies and is fluent in Russian and Hebrew in addition to English.
Kass reportedly reached the rank of major in the Israeli air force before moving to the United States and working her way up through the US defense establishment. She is currently the most senior civilian adviser to Air Force Chief of Staff Norton Schwartz and is believed to have access to most American defense secrets. [snip]
My concern regarding Dr. Kass is based on the potential conflict of interest and divided loyalty that is normal in anyone who is born in one country and moves to another. She comes from a country that has a history of large scale and highly aggressive espionage directed against the United States and she appears to continue to have close ties to her birthplace. Dr. Kass has become a naturalized American while apparently retaining her Israeli citizenship and her three children were reportedly born in Israel, not the United States. The information she has access to would be extremely valuable to Israel and potentially damaging to US interests, particularly as she likely knows what the US Air Force response to a unilateral Israeli attack on Iran would be.