Says time of war is not the right time to continue GOP fight: "I feel I have to stand aside."
Read full remarks from CPAC conference here. Watch video above.
Did not endorse McCain. AP: Decision effectively cedes nomination to McCain.
Obama, kicking Romney as he heads out the door, criticizes him for saying Democrats are soft on terror. Watch it above.
Plus: Watch Halperin explain some reasons for McCain's success in the GOP race here.
HALPERIN'S TAKE: TEN THINGS MITT ROMNEY COULD HAVE DONE DIFFERENTLY.
