Those plots were thwarted for two years until the Burgas airport attack last Wednesday 
in which five Israelis and a Bulgarian lost their lives, Mossad spy chief Tamir Pardo and Shin Bet internal security chief Yoram Cohen informed cabinet ministers in a briefing Sunday on “counter-terrorism activity by the intelligence services.” The two security chiefs also gave their evaluations of the dangers presented by Iran, Syria and Hizballah.
Source: Debka