McCain's Flip-Flop on drilling, or is it?.

Back on January 17th, 2008, John McCain was asked about opening up drilling in ANWR, his response was no.

In December 2007, McCain was also quoted as saying he was against it.

Today, he announced he will call for removal of the federal moratorium on drilling, but he never specifically mentions ANWR. Is this a flip-flop? or is this a nuanced position?