“North Korea’s fifth nuclear test is ominous not only because the country is slowly mastering atomic weaponry, but because it is making headway in developing missiles that could hurl nuclear warheads halfway around the globe, threatening Washington and New York City. The reclusive, hostile nation has been rushing to perfect missiles that are small, fast, light and surprisingly advanced, according to analysts and military officials. This spring and summer, Pyongyang successfully tested some of these missiles, while earlier efforts had fizzled or failed.”
Source: Nuclear weapons: Why size matters to Pyongyang | GulfNews.com