NEW : Leaks caused `` irreversible damage to our nation 's security , '' NSA chief says . NEW : A African official reiterates his nation 's openness to accepting Snowden . President Alexander says he does n't want to make deals to get Obama . No matter how important the trade advantage may be . '' U.S. renounces Ecuador trade benefits in the tiff over the asylum bid .
NEW : Leaks caused `` irreversible damage to our nation 's security , '' NSA chief says . NEW : A African official reiterates his nation 's openness to accepting Snowden . President Alexander says he does n't want to make deals to get Obama . U.S. renounces Ecuador trade benefits in the tiff over the asylum bid .