SEOUL—Inspectors from the UN nuclear watchdog arrived in Seoul on Sunday to conduct a second inspection of South Korea’s nuclear experiments, a day after the South said it had no plans to develop or possess nuclear weapons.The five-member delegation is to scrutinize the main nuclear laboratory in the central city of Taejon on Monday and to take a second look at 134 kg (294 lb) of natural uranium metal, Yonhap news agency and officials have said.The International Atomic Energy Agency (IAEA) first tested the material this month.The issue prompted North Korea on Saturday to say it would never dismantle its nuclear arsenal and would not resume talks on its atomic programs unless the United States dropped its “hostile” policy, the North’s official KCNA news agency said.In a rare commentary that carries considerable weight, KCNA said disclosures about unsanctioned nuclear experiments in South Korea in 2000 and 1982 showed Washington applied double standards, criticizing the North but understanding the South.South Korea recently said scientists had enriched a small amount of uranium in 2000 and separated plutonium in 1982 without government knowledge or approval. Diplomats have said some of the uranium was close to the purity needed for an atom bomb.The IAEA is investigating whether all parts of South Korea’s nuclear program have been declared to the agency and is due to present a report on its findings when the IAEA board of governors meets again in November.Upon arrival at the airport, the inspectors declined to comment, referring all questions to their Vienna headquarters.During an eight-day visit, they are expected to interview scientists who have been involved in the nuclear experiments, Yonhap said.Meanwhile, Japan’s army has worked out a secret plan to deal with possible large-scale terror attacks by North Korea, a press report said Sunday.The plan, based on the presumption up to 2,500 North Korean agents could infiltrate Japan, calls for the deployment of ground troops at 135 key facilities, including government buildings and nuclear power plants, Kyodo News said.It was compiled by the Defense Agency’s ground staff office, the newswire quoted sources familiar with the plan as saying.No official was immediately available at the agency to comment on the report.Reflecting the office’s strong concern about North Korea, the plan pointed to possible attacks such as the assassination of leading figures and the use of chemical and biological weapons, the report said.It also emphasized the presence of ethnic Koreans who were loyal to Pyongyang’s Stalinist regime and may support the special agents, the report said.--AFP, Reuters