From May 2017 to August 2018, he served as the Chief of Diplomatic Staff of the Deputy Minister of Foreign Affairs Tzipi Hotovely.

He assumed this post in August 2009, and has been responsible for maintaining direct contact with America’s national and local media in the tri-state area, before New York he served as Deputy Director for the Western European Department at the Ministry of Foreign Affairs in Jerusalem and was responsible for political relations with Germany.

Lion served in the Israel Defense Forces and attained the rank of Sergeant-Major in the Artillery Corps.

[6] During operation "Cast Lead", he worked as director in charge of the MFA Press Center in Sderot.

During the Russian invasion of Ukraine he headed Israel's Emergency Response Team in Moldova, dealing with the Ukrainian refugee crisis.

He earned a PhD from Ariel University, the subject of his dissertation was: "The Israeli Foreign Service and the Jewish Immigration from the French Protectorates in North Africa (1948-1956)", an M.A.