“second of two” could also indicate which plot or location (if we were to assume several plots nearing or at operational status) is to be set into motion.
Glasgow/London attack may or may not have been number 1 in a series.
I think you may be right in saying there is more to come.
““second of two” could also indicate which plot or location (if we were to assume several plots nearing or at operational status) is to be set into motion.”
OPINION-SPECULATION.
I agree.