No, Mr. Tomasky, the "triumph" in Libya in no way guarantees Obama is a good, or even half-good, foreign policy president. First, although you do list a few of them, Greenwald has a whole laundry list of what could still go wrong or NOT pan out in Libya.
Second, there's plenty of wrong he's already done in foreign policy.
No balls in standing up to Israel;
The Afghan surge while getting rickrolled by generals;
Targeting American citizens with drones;
Negotiating more questionable "free trade" deals;
Not forcing real regime change in Egypt.
It's clear there are still Obamiacs on both sides of the pond.