Ugh. Where to begin....
If he's willing to use the bible as an authority, he's already screwed. But that's not quite what he's looking for, so we'll skip that....
The question should be returned, questioning whether or not a suicide bomber would be biblically justified to release a suitcase nuke on Mecca during Ramadan.
After all, God approved of Samson doing it........
New Testament= No.