Statement: It is not true that the mightiest superpower always wins wars and gets accolades from other countries.
Assumptions:
I. Winners are sometimes admired and appreciated.
II. Winners are occasionally criticized.
If both I and II are implicit
The statement mentions that superpowers do win wars but their victory is not always applauded, but sometimes criticized as well in case the victory is an act of oppression of the weaker nation, and is not backed by a reasonable cause. So, both assumptions are implicit.