 He joined Israel's Ministry of Foreign Affairs in 1990, serving as deputy chief of mission at the Consulate General in Hong Kong, and spokesman at the Israeli Embassy in Beijing.He also served as spokesman at the Embassy in Washington, D.C.. Regev was the spokesman for the Ministry of Foreign Affairs in Jerusalem from 2004 to 2007.Regev has both received prominence and criticism in international media when he presented the Israeli position in numerous interviews to English language TV and radio channels during the 2006 Lebanon War, the 2008–09 Gaza War, the 2012 Operation Pillar of Defense, and the 2014 Israel–Gaza conflict and Operation Brother's Keeper.