The attack on Israelis visiting Bulgaria is probably the work of Hizballah or Iran's intelligence services. UPDATED-Hezbollah confirmed. Or both. The Iranians have been especially active in attempting to strike Israeli targets over the past few months. These actions have included incidents in Bangkok, Georgia and India. Israel's priority at the moment is to prevent Iran from acquiring a nuclear capability. As I argued several months ago, for each Western/Israeli action in the region, Iran prepares a counter-response. Israel will now encourage the international community to increase pressure on Iran.
Also - Although not engaged in an actual attack - Israel claims that Hizballah operatives were detained in Kenya and Cyprus over the past few days.