U.S. officials feared Kim Jong-un would mark the national holiday by launching North Korea's sixth nuclear weapons test, since the country has used previous holidays to showcase its military prowess.
Pyongyang's rogue atomic ambitions have come into sharp focus in recent weeks, with United States President Donald Trump vowing a tough stance against the North and threatening unilateral action if China failed to help curb its neighbour's nuclear programme.
Kim did not address the rally, which celebrates the 1912 birthday of his grandfather, Kim Il Sung - North Korea's founding ruler - and which is meant to send an unmistakable message to Washington about the isolated, nuclear-armed North's military might.
Choe, who is believed to be the second-most powerful official in North Korea, further stated that the new USA government under Donald Trump was "creating a war situation" on the Korean Peninsula by dispatching strategic military assets to the region.
U.S. Pacific Command said the ballistic missile, of a kind not yet determined, was launched from near a submarine base at Sinpo, a port city on North Korea's east coast.
The move, coupled with the U.S. retaliatory strikes against Syria over a chemical weapons attack on civilians, has sparked fear in South Korea that the United States was preparing for military action on the North.
It was the first time North Korea had shown the missiles, which have a range of more than 600 miles. He said Pence will try to balance reassurance with a willingness to respond if North Korea acts.
Kim Dong-Yub, a North Korea expert at Seoul's Institute for Far Eastern Studies, said the canisters and trucks suggested that the country was developing technology to "cold launch" ICBMs.
After inspecting an honor guard, Kim, in a black suit, watched the parade pour into Kim Il-Sung Square, accompanied by top military and party leaders, state television showed in a live broadcast.
North Korea also launched a long-range rocket previous year that put a satellite into orbit, which Washington, Seoul and others saw as a banned test of missile technology. A North Korean missile exploded during la.
This would allow North Korea to prevent its limited number of ICBM-capable launcher trucks from being damaged during launches and also make the missiles harder to detect after they're fired, he said. Analysts say such missiles may be able to reach targets as far as the United States.
Kim Jong Un, a 30-something leader who took power in late 2011 after the death of his father, Kim Jong Il, emphasises nuclear weapons as the foundation of his national defence strategy. "Look, we've tried for 25 years across Republican and Democratic administrations to persuade the North Koreans to give up their quest for nuclear weapons".
South Korea has also stepped up its military preparations and is calling for closer cooperation and intelligence sharing betwen the United States and Seoul.
North Korean soldiers are facing the death penalty after spreading a joke comparing Kim Jong-un to a kindergartner.
Washington has threatened military actions against Pyongyang if it conducts its sixth nuclear test this weekend. This matters because while North Korea regularly launches short-range missiles, it is also developing mid-range and long-range missiles meant to target US troops in Asia and, eventually, the USA mainland.
This development comes amidst speculations that the regime was preparing to conduct a nuclear test.