Two theory questions(sort of)

[aslowjoe]

opening round early positon raises to 80. Your late pos with AKo. You raise to 200. You get reraised to 400. Call or raise all in?


blinds 150/300. utg folds with a chip stack of 200.

Bttn 4500 raises all in. (he could be raising with any 2 because he knows that with utg all in on the next blind that it is unlikely that he will be called.)

SB 2500 KK

BB 800

I am in the sb and I call without hesitation. Bttn turns over 96o and I lose. No big deal and I am sure I did the right thing. My question here is what is the minimum that you would call here with.