Johnson never really wanted a victory in Vietnam. He just wanted to avoid any political damage and ensure that the war did not interfere with his socialist domestic agenda. In this respect. Obama is taking exactly the same course and will likely have exactly the same outcome.
Exactly. Ø wants the US to lose - thus losing: face, prestige, influence, power, money, American lives, allies, etc.
My evidence is that the people he surrounds himself with - Bill Ayers, Rev. Wright, etc. - all HATE the US. These goals are consistent with their hatred, and as Ø shares their politics, he shares their goals.