<p>UNITED NATIONS — A contentious United Nations (search) debate is brewing — and this time it's not over Iraq. It's all about who pays to maintain the U.N. itself.</p>
<p>The U.N.'s two 50-year-old buildings in New York City are basically falling apart — decaying pipes and crumbling ceilings are now commonplace — and the U.N. is seeking an interest-free loan worth more than $1 billion to renovate its headquarters.</p>