Dr. Craig is a liar.

[Pat Mustard]

The cause and effect principle being leveraged here is a temporal principle.  Each cause must precede its effect in time, which means that the principle cannot confidently be applied outside of time.  So, as we trace the universe back to the singularity and we reach the point where t=0, the cause and effect principle no longer applies.  In fact, our entire understanding of the laws of physics breaks down at this point, so attempting to use the cause and effect principle to explain it is completely unjustified and nonsensical.

You have no reason to think that whatsoever. Don't confuse metaphysics with physics.

Be much better for you to stop confusing mythology with reality, rather than trying to correct others on subjects you know nothing about.