I exchanged a few emails with Monckton. He conceded that
the 1421 claim was rubbish
that the graph in his article was bogus (he said the the Telegraph insisted on its inclusion and that they were the ones who sexed it up)
that Hansen did not predict temperature rise of 0.3 degrees and a sea level rise of a few feet by 2000
We got stuck on his claim that the Andean glaciers had vanished in the medieval warm period. He wouldn’t admit that this was wrong even when I pointed out that his own pdf of supporting material refers to ice core proxy measurements of temperature in the Andes during the medieval warm period. I asked him how could you have ice cores covering the MWP if there was no ice there then, but he wouldn’t budge.