Political analyst Masha Lipman at the Moscow Carnegie Center says President Medvedev's appeal to Islamic spiritual leaders may be an attempt to contrast ordinary with radical Islam.

VOA: standard.2010.04.01

The cause,says Abbas, is the misinterpretation of the concept of jihad, or the struggle for Islam, by radical leaders and many clerics.

VOA: standard.2009.09.21

Russian authorities asked U.S. officials to investigate Tsarnaev before the trip, saying they believed he was becoming increasingly involved with radical Islam.

CNN: 4 dead, 44 hurt in Dagestan bombing, security officials say

Russian authorities asked U.S. officials to investigate Tamerlan before the trip, saying they believed he was becoming increasingly involved with radical Islam.

CNN: Suspect: Boston bombing was payback for hits on Muslims

Some of the terms that have been used in the past, and by some today, include political Islam, fundamentalist Islam, radical Islam, extremist Islam.

CENTERFORSECURITYPOLICY: Frank Gaffney: Jihad by other means