Actually they were Chechens not Russians, get educated. Chechnya is a Muslim Region controlled by Russia and they are notorious for their Radicalized Islam. You think 5 people in bomb is large think about 200 Russians dying from these guys. I understand that you say that not all Muslims are terrorists however a good portion are radicalized.Or about 7%. You might think that is small but 7% of 1.3 billion is 91 MILLION. That is more than the population of Spain and Italy.
Hypothetical Scenario:
Two short range nuclear weapons hit Islamabad and the Pakistan retaliates by hitting New Delhi. This causes Pakistan to plunge into Civil War and their nuclear weapons are lost track off. Insurgents, Taliban, and the Iranians flood into the area and add more chaos. The Iranians are successful in stealing some of their nuclear weapons and are able to bring it back home. They attach them to modified SCUD missiles and fire them to Israel. Israel fires back and plunge the entire area into chaos. Oil skyrockets in price and forces a Coalition force into the area to bring peace. Millions die and prevents and idea of Middle East peace for decades to come.
Is this what YOU want?