article_snippet: Police said the motive for Kim's action was not known, but Kim shouted after attack that Kim opposes the ongoing annual U.S.-South Korea military drills that North Korea condemns as a preparation for a northward invasion.
article_snippet: Seoul and Washington call the ongoing annual U.S.-South Korea military drills that North Korea condemns as a preparation for a northward invasion defensive and routine.
article_snippet: As part of the police investigation officers have requested Kim's past travels to North Korea — seven times between 1999 and 2007 — during a previous era of inter-Korean cooperation, when Seoul was ruled by a liberal government.
article_snippet: Kim also attempted to build a memorial altar for former North Korean leader Kim Jong Il after Kim death in December 2011, police said.
article_snippet: attack prompted rival North Korea to gloat about 'knife slashes of justice.'
article_snippet: Police said the motive for Kim's action was not known, but Kim shouted demands for Korean reunification .
article_snippet: The United States is South Korea's closest ally andmaintains a military presence of 28,500 personnel.
article_snippet: While thathas drawn protest from some South Koreans in the past,opposition has eased in recent years.
article_snippet: Pro-US: While South Korea is one of The United States's strongest allies in Asia, there are factions of The United States against the strong US military presence .