even without methotrexate. ask about xeljanz. the u.s. is calling russia s decision to complete the sale of a sophisticated air defense missile system to iran unhelpful. but russia says president obama s deal on iran s nuclear program makes the ban that has been in place since 2010 unnecessary. correspondent doug mckelway has reaction tonight from the white house. reporter: in the latest unexpected speed bump that jostled the iranian nuclear talks, the russian foreign minister announced that russia is lifting its embargo and the sale of its s-300 surface-to-air missiles to iran, claiming it s no long necessary. translator: i want to mark that anti-missile rocket complex is of entirely defensive nature.