That is not possible. However it's possible that "not much" will happen, but the .io domain would have to move to the control of another country with the current rules in place. For historic precedent on this you can look at the .yu domain which was forcefully transferred to Serbia (more precisely FR Yugoslavia) when Slovenia did not want to give it up.
I don't think it's very likely that it will be retired given the state of .su.
That is not possible. However it's possible that "not much" will happen, but the .io domain would have to move to the control of another country with the current rules in place. For historic precedent on this you can look at the .yu domain which was forcefully transferred to Serbia (more precisely FR Yugoslavia) when Slovenia did not want to give it up.
I don't think it's very likely that it will be retired given the state of .su.