NATIONAL BRIEFING / NEBRASKA

Warren Buffett remains optimistic about the prospects for his company and the nation even though Berkshire Hathaway Inc. turned in its worst performance in 2008 and the widely followed investor says the economy will probably remain a mess beyond this year.

Buffett used his annual letter to reassure shareholders that the Omaha-based insurance and investment company has the financial strength needed to withstand the current turmoil.

Buffett wrote he’s certain “the economy will be in shambles throughout 2009 -- and, for that matter, probably well beyond.” But, he added, “though the path has not been smooth . . . America’s best days lie ahead.”