4/7: S. Korea warns about potential N. Korea missile attack; Gun control debate addresses "patchwork" of state laws

      |South Korea's national security adviser warned that North Korea may launch a missile in April. Despite the threats, the U.S. Embassy in South Korea has not change its security posture; Also, Guns are being illegally trafficked from other states into cities and town to commit crimes; And, With so many animals in displays becoming endangered, the St. Louis Zoo is pressured to shift its focus from exhibition to conservation.

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