WASHINGTON—After exchanging a handshake and what were described as “warm words” with Hugo Chavez, Barack Obama friended the Venezuelan president on Facebook yesterday. Obama described the move as “a step forward in American foreign policy.” Chavez was quick to accept the friend request, saying he was happy to finally get the respect he deserved from the American government. “All that Bush guy ever did was send me pokes. For crying out loud George, do you have any idea how annoying