U.S. Secretary of State John Kerry flew to Vienna Thursday to join talks on Iran's nuclear program. The talks are taking place four days before a deadline to reach a new agreement. A temporary agreement reached last September ends on Monday.

　　The talks in Vienna include Iran, the United States, France, Germany, Britain, Russia and China. Mr. Kerry and other Western officials said Iran still must decide to accept limits on its nuclear program.

　　An unnamed U.S. official told Reuters news agency Thursday that UN negotiators were talking about extending the deadline, until March of next year.

　　But Mr. Kerry said the delegates were not discussing an extension.

　　North Korea Threatens Nuclear Test Over UN Vote

　　North Korea on Thursday threatened to carry out another nuclear test in answer to U.N. action against it. A U.N. committee condemned North Korea for suspected human rights abuses.

　　The North Korean foreign ministry released a statement Thursday. It said the country will be "unable to refrain any longer" from holding a fourth nuclear test. The statement said the government was acting in answer to a U.N. action. The United Nations earlier this week moved to bring the country before the International Criminal Court for crimes against humanity.

　　Robbers steal blood of possible Ebola patients

　　Robbers in Guinea have stolen a cooler containing small amounts of blood from suspected Ebola patients. The robbers took the cooler during an attack on a vehicle Thursday. The vehicle was traveling from northern Guinea to an Ebola treatment center in the southeast.

　　Health officials are urging the robbers not to open the cooler and to return it immediately.