A United States think-tank on Monday said it discovered North Korea’s “undeclared” missile operating base near its border with China, which is believed to house intercontinental ballistic missiles (ICBMs). The Centre for Strategic and International Studies (CSIS) said in a report that the Hoejung-ni missile operating base is located about 15 miles (25 kilometers) from the border with China in Chagang province and 173 miles (280 kilometers) northeast of Pyongyang, based on its satellite images. “The Hoejung-ni missile operating base will, according to informed sources, likely house a regiment-sized unit equipped with intercontinental ballistic missiles (ICBMs),” the report stated. “Should operational ICBMs not become available in the near term, it is likely that intermediate-range ballistic missiles (IRBMs) will be deployed,” it added. CSIS claimed that the Hoejung-ni missile base was “one of approximately 20 ballistic missile operating bases that have never been declared by North Korea.” The name of the …