Excuse me?
My understanding is that a ballistic missile's path is determined strictly by ballistics - weight, firing time, firing angle, engine power, etc.
I think he might be referring to RANGE. While there ARE some truly longrange cruise missiles, so far as we know only ballistic missiles fall into the INTERCONTINENTAL range category.
This is a bit of a quibble, but I think that's what he meant.
If he had said "not that there are any non-ballistic intercontinental missiles", then he would have been correct?