Starbucks lowered its full-year sales forecast after reporting a drop in comparable sales for the first time in almost three years due to weak demand in the US and China, the company's two largest markets.
Extreme temperatures and droughts in Southeast Asia have led to lower coffee bean yields in Vietnam and Indonesia, the world's second and third largest producers, sending global coffee futures to near record highs.
An armed man has taken four people hostage in a Starbucks cafe in Ulm, Germany. Police detained the man as he tried to leave the cafe with the hostages, using a firearm. None of the hostages were injured.