North Korea presented a New York University student to state-run media Friday, saying that Joo Won-moon, 21, is healthy, even though he hasn’t been allowed to contact his family. Joo, a U.S. permanent resident and South Korean citizen, was detained after crossing into North Korea illegally in April. He read aloud a coached statement Friday in which he praised North Korea. It remains uncertain whether the country will prosecute him or allow him to leave.