Klitschko added: "It is the most important fight of my entire career. What can be more important than finding a way to keep your country united?"
That is one daunting backdrop against which to prepare for your eighth professional bout. Parker is known to be a cool customer before fights but his nerves have the potential to be stretched to breaking point at the Koenig Pilsener Arena on April 27. However, he has faith in his skills and preparation and another comfort is the fact that his younger brother, John, and his parents will be in the dressing room with him.
"Just thinking about the crowd that's going to be there and the people watching, that excites me," Parker said yesterday. "That's what motivates me at training. I know it's going to be a big event but I'm not going to let it get to me.
"I'm still at the beginning of my career, I've only had seven fights, so for someone to be on this stage after seven fights, I'm very fortunate.
"The training I do before fights gives me confidences. I go in cool, calm. In the changing rooms [I will be] smiling, chilling out and just dancing around listening to music. It's important to stay relaxed and not tense up. If you tense up you get too tired before the fight."
Leapai earned the right to fight Klitschko after his upset victory over Denis Boytsov in November, a triumph which has earned him a shot at the big time and which has resonated strongly with Parker.
"I'm very excited for him, thinking about that motivates me as well - a Samoan brother fighting for the world title."