In this photo taken Monday, Feb. 20, 2012, an Iranian bomb suspect Mohammad Kharzei, center, is escorted by Thai police officers to verify the house where he and other Iranian compatriots rented in Bangkok, Thailand. One week after three Iranians were arrested in an apparently botched terror plot allegedly aimed against Israeli diplomats, profound questions remain unanswered about who was behind it. (AP Photo/Sakchai Lalit)