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On Wednesday, North Korea launched roughly a dozen missiles toward South Korea, and at least one of them touched down close to their tense maritime boundary.

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In retaliation, South Korea launched its own test missiles.

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Hours after North Korea vowed to use nuclear weapons to pressure the United States,

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South Korea has increased its harsh language, threatening to "pay the most terrible price in history."

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military exercises between South Korea and the US that it perceives as a practise invasion.

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At least one of the missiles fired by North Korea, according to South Korea's Joint Chiefs of Staff, fell fewer than 40 kilometres away.

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from Ulleung, where air raid sirens had sounded, which was 104 kilometres away from the east coast city of Sokcho in South Korea.

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"Around 8:55 am, we heard the alarm, and everyone in the building descended to the basement evacuation area,"