there is history behind why every one is using the term Taliban , so please dont get shocked atleast. and suicide bombing is not like shooting guns, there is lot behind it , so guessing the source is not very difficult.
We need to stop blaming others countries , we need to bring our own house in order. Also stop blaming politicians , they havnt came from sky, "Jaisi qaum hoti hai , us par waisay hi hukmaram musalat kar diayay jatay hain" .
on the exact topic , its scary, its sad , its bad, I am not a father yet, but I cant imagine being a parent and sending my kids to school in such scenario and then getting worried each day that would they be home safely today.
ya we all need to be vigilent in our domains, and keep our eyes and ears open, security/law enformcing authorities can not protect all, specially when we are passing through a time where are intelligence agencies are not as top notch as they were used to be in 90ties.