Didn't encompass Reagan, he got the hostages out and rebuilt the tattered military under Carter into a massive force the Soviets withered with fear from.
When did this happen.
The Marines barracks terrorist attack in Beirut in October 1983 was the real birth of islamic terrorism. On the tactical level, this incident started the most important and the most efficient tactic that terrorists use which "Suicide Bombing". On the strategic level, the failure or most precisely the unwillingness to hit back at the islamic terrorists in Lebanon after the Marines barracks terrorist attack have greatly embolden the terrorists.
Granted that the most important visible enemy at that time was communism and the Soviet Union and President Reagan greatest achievement was the destruction of the Soviet Union, but ignoring the threat of islamic terrorism then was a strategic mistake and the beast have grown so much from 1983 to 2001 and no one have seriously dealt with terrorism until we got hit on 9/11 and we went to war against islamic terrorism. A war that we are winning and we will eventually achieve the final victory thanks to the bravery of our military and the great leadership of President Bush.
The Beirut bombing (and failure to properly respond to it) happened on Reagan's watch. Admiration for his overall record shouldn't blind you to the fact that sometimes he blew it.