Some of the covert activities have come to light, showing role of 'broad covert action campaign'
Double agent's assurance that Hamas was not planning operation contributed to lack of preparation
Israeli military recruits Yemeni-background Jews to improve intel gathering on Houthis
Six intelligence officers were reportedly blocked from alerting political leadership
Unit 504 interrogators revealed critical evidence of terrorists' crimes
IDF intelligence struggles to create effective target lists
Israel and US are the world’s leading cyber warfare powers