Why does no one in power see a pattern?

The return of terror attacks to Moscow shows that Russia's decade-long fight against an Islamic insurgency has not worked, analysts said Monday.

Russian state security services say the twin subway bombings that killed 38 people Monday in Moscow are likely the work of Chechen suicide bombers.

http://www.usatoday.com/news/world/2010-03-29-Moscow-bombing_N.htm

How many people need to be killed by "Islamic insurgency" before those in power notice that the root of terrorism is largely "Islamic insurgency"?