WINEP's Matthew Levitt explains his research methods for his new book on Hizbullah: "Hezbollah: the Global Footprint of Lebanon's Party of God"

"The documents I collected include declassified reports from the CIA and FBI, the Canadian Integrated Threat Assessment Centre (ITAC), the Israeli Shin Bet and Mossad"...Because of the sensitivity of the subject matter, and since many of the people I interviewed were current or former government officials, many of the interviews were conducted on a not-for-attribution basis". p. xiv.