uvdiv

    f:  0 -> 0
    f:  a -> (-b) -> (-a) -> b -> a

    An unnamed senior Administration official joined the Snowden-bashing 
    chorus, telling reporters, “Mr. Snowden’s claim that he is 
    focussed on supporting transparency, freedom of the press, and 
    protection of individual rights and democracy is belied by the 
    protectors he has potentially chosen: China, Russia, Cuba, Venezuela, 
    and Ecuador. His failure to criticize these regimes suggests that his 
    true motive throughout has been to injure the national security of 
    the U.S., not to advance Internet freedom and free speech.”