The "offered hand" is reluctant fist = The "offered hand" is
probably reluctant fist?
What is the grammar?
(In my ears, the "offered hand" is a helping hand: you'd like to help, do you? No reluctance here thereof)
Context:
"In crucial things. unity" and this, my friends, is crucial.
To the world, too, we offer new engagement and a renewed vow: We will stay strong to protect the peace.
The "offered hand" is reluctant fist; but Once made, strong, and can be used with great effect.
More:
http://prop1.org/inaugur/89bush/890120b1.htm