secretary of the interior ken salazar tells us maybe the government is just a little too close to big oil. the number one international story tonight, a changing of the guard in the uk. labor leader gordon brown stepping down as prime minister. a day of high political drama ended when less than 90 minutes later, barely enough time to change the linens conservative david cameron moved in to 10 downing street. as tradition dictates, cameron was summoned and asked by the queen. her majesty the queen has asked me to form a new government and have i accepted. but cameron is not alone at the top. because no party won a majority, he had to make a deal to form a coalition with the liberal democrats there. has been all sorts of horse trading. at one point it did look as though brown would stay in power, but he didn t have the support of his party. as i leave the second most important job i could ever hold, i cherish even more the first, as a husband and father.