North Korea May Fire Another ICBM This Weekend, South Warns by STELLA KIM and ALEXANDER SMITH SEOUL, South Korea — Less than one week after North Korea appeared to carry out its sixth nuclear test, South Korea warned Thursday that its neighbor may fire an intercontinental ballistic missile this weekend. South Korea's prime minister, Lee Nak-yon, suggested that Kim Jong Un, the North's leader, could order a launch on Saturday, the 64th anniversary of the totalitarian regime's founding. "There is speculation that there could be an additional provocation of firing an ICBM at a normal angle on [Sept.] 9," Lee...