The test was in line with Kim Jong Un's goals of targeting the U.S., but some experts speculate the claim may be exaggerated.

A push to increase the engine power is likely associated with efforts to place multiple warheads on a single missile to ...

While the test was in line with Kim's stated goal of acquiring more agile, hard-to-detect missiles targeting the U.S. and its allies, some experts speculate North Korea's claim may be an exaggeration.