The ruling Liberal Democratic Party should discuss any security policies, including Japan's three long-held principles of not possessing, producing or permitting the introduction of nuclear arms, its policy chief said Thursday."It's our responsibility as the ruling party to hold talks without any sacred cows," Takayuki Kobayashi told a press conference as the LDP launched discussions on revising Japan's three key security documents, with the security challenges posed by China and North Korea ever-growing."We should discuss a variety of topics," Kobayashi said.The LDP, led by Prime Minister …READ FULL ARTICLE