Hi,

I want to direct my remarks here to three angles that we need to address in a triangle of challenges and that I think present themselves to us as we take a step into the future, away from the five years that have passed since September 11.

Can and be inserted or please suggest some punctuation changes in the above sentence.  

Yes, but I'd put a comma in front of it to make the sentence easier to understand.

I don't know what you mean by the phrase 'angles in a triangle of challenges'.

 I think your sentence above needs rewording. It contains too much, and thus lacks focus. I'd consider making it into two sentences.

The first is the appearance, in the last century, in each of the traditions, of what some refer to as a fundamentalist movement, a fundamentalist wing, that is, a strong a reaction against interfaith dialogue, which is viewed as a lethal danger to the integrity of the faith.

Can the a be deleted? Please advise. It needs to be deleted.

Best wishes, Clive