Down 12% in a Month, Is Coca-Cola the Best Warren Buffett Dividend Stock to Buy Now?

Declining demand and a strong U.S. dollar could impact Coke's results.Warren Buffett-led Berkshire Hathaway (BRK.A) (BRK.B 0.55%) has owned Coca-Cola (KO -1.29%) stock for decades. Coke is, without a doubt, one of Buffett's best investments ever, as the position's value has increased several fold while paying a steady stream of passive income.Although typically a stable stalwart, Coke stock is down over 12% in the last month, erasing most of its year-to-date gains. Here's a look at why Coke is selling off a ...