I kinda want to learn more. Does this mean he can't set foot in America? What about other countries? Is he free to continue wikileaks? I think he should be ready to retire even if he is able to... 

 They have taken him to a US controlled Island, so basically he will be on U S territory. I think he needs to submit his plea in a US jurisdiction.  I hope it is not a dirt trick on their part. I will only believe he is free when he is on Australian soil.