Gregor is getting really irritated with both Kovan and Amelia at this point, but controls himself beyond a quiet, "Amelia, hush." "Why" is a non-essential at this point. We need "where."

Then he rises to his feet, carefully planting both hands flat on the table. His face is so neutral as to be completely blank, bland as a sheet of white paper. "You do not have a leg to stand on, if you'll notice. You're surrounded by Malnosso forces. Your supposed allies are not coming for you. The only possible reason you could have planted a bomb is to take as many people down with you. But has it occurred to you yet that you don't have to go down at all?"