The Iraqi Security Forces (ISF) pushed ISIS out of eastern Mosul on January 24, but will need to continue efforts to expel ISIS from historic support zones in Diyala and Anbar. With the support of Coalition advisors, the ISF recaptured the last ISIS-held neighborhood in eastern Mosul on January 24 and is preparing to launch operations into western Mosul. ISIS continues to demonstrate, however, that it has set conditions to retain its capabilities and networks in order to survive the loss of Mosul in Iraq. The group remains active in recaptured areas in which it, and its predecessor al Qaeda in Iraq (AQI), had extensive networks. Ongoing low-level attacks in the Euphrates River Valley and in Diyala Province underscore that ISIS is reconstituting its abilities and returning to traditional style terror tactics outside of its efforts to govern and hold cities. The ISF and Coalition will need to continue anti-ISIS operations beyond the recapture of Mosul and may need to reopen clearing operations in previously recaptured areas in order to eliminate ISIS in Iraq.