The world is reeling from the effects of three large-scale terrorist attacks that all happened in less than a week.

The terrorist group ISIS bombed the Brussels Airport on Tuesday, killing 35 people. Then on Friday, an ISIS suicide bomber killed 29 at a football match in Iraq. The week finished with the Taliban bombing a busy park in Pakistan on Easter Sunday – this suicide bomber claimed the lives of 72 people.

In total, at least 136 people lost their lives in these three terrorist attacks.

The director of the Center for Middle East Studies at the University of Denver says radical terrorist groups will exist as long as the conditions that create them remain.

The center's director, Nader Hashemi, believes these terrorist groups are able to operate and launch large attacks in Western countries because the international community is not identifying the root of the conflict.

“We may be able to crush ISIS today or tomorrow,” Hashemi said. “But another form, another iteration of an ISIS-like group will continue to spread as long as the social, political conditions in those parts of the world are ripe for producing this type of militant, radical jihadi ideology.”

Hashemi hopes under the proper leadership maybe long-term solutions can be found to change the mentality and cultural climate in those parts of the world – ending the “new-norm” of terrorism.

But the DU professor warned that certain political rhetoric happening right now in the US could be dangerous and lead to more terrorist recruitment.

“The rhetoric that we're hearing today from some people in the Republican Party who are running for president -- banning all Muslims, patroling Muslim neighborhoods is actually feeding into the ideological narrative of ISIS who want precisely a clash of civilizations to take place,” Hashemi said. “So we have to be incredibly careful not to fall into the trap of blaming all Muslims.”

Muslims make up 98 percent of ISIS’ victims.