The Woking based chairman and principal said 25-year-old Raikkonen - who dominated at Barcelona last weekend - can stay in silver 'as long as he wants.'
"He has the ability to win many, many world championships," Dennis - aware of Ferrari's open admiration of Raikkonen - told Finland's MTV3 TV channel.
"We will fight to keep Kimi on the team."
But Ron is aware that Raikkonen, one of the hottest properties in pitlane, will ultimately opt for success over loyalty.
"If we don't deliver (for) him," Dennis admitted, "I am sure he will look at other teams."