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The Boston Globe

World

North Korea conducts its third nuclear test

PYONGYANG, North Korea (AP) — Defying UN warnings, North Korea on Tuesday conducted its third nuclear test in the remote, snowy northeast, taking a crucial step toward its goal of building a bomb small enough to be fitted on a missile capable of striking the United States.

North Korea said the atomic test was merely its ‘‘first response’’ to what it called US threats, and said it will continue with unspecified ‘‘second and third measures of greater intensity’’ if Washington maintains its hostility.

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