Obama says Iran's energy concerns legitimate

http://www.washingtonpost.com/wp-dyn/content/article/2009/06/02/AR2009060200947_pf.html

"Oil reserves in Iran, according to its government, rank third largest in the world at approximately 136 billion barrels (21.6×109 m3) as of 2007, although it ranks second if Canadian reserves of non-conventional oil are excluded. This is roughly 10% of the world's total proven petroleum reserves. Iran is the world's fourth largest oil producer and is OPEC's second-largest producer after Saudi Arabia."
http://en.wikipedia.org/wiki/Oil_reserves_in_Iran

So they need nuclear power why?