Military vehicles carry missiles with characters reading "Pukkuksong" during the military parade in North Korean marking the 105th birth anniversary of country's founding father, Kim Il Sung.
He told the packed-out square: 'If the United States wages reckless provocation against us, our revolutionary power will instantly counter with annihilating strike, and we will respond to full-out war with full-out war and to nuclear war with our style of nuclear strike warfare'.
The parade, the annual highlight of North Korea's most important holiday, came amid growing global worries that North Korea may be preparing for its sixth nuclear test or a major missile launch, such as its first flight test of a ballistic missile capable of reaching United States shores.
"All the brigandish provocative moves of the USA in the political, economic and military fields pursuant to its hostile policy toward the DPRK will thoroughly be foiled through the toughest counteraction of the army and people of the DPRK", the KCNA state news agency said, citing a spokesman for the General Staff of the Korean People's Army.
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. As it's North Korea, being on display does not necessarily mean they are operational, but the regime is showing that they are in development.
Choe Ryong Hae, who some say is the second-most powerful official in North Korea, said in a speech that the country is ready to stand up to any threat posed by the US.
North Korean leader Kim Jong-Un on April 15 saluted as ranks of goose-stepping soldiers followed by tanks and other military hardware paraded in Pyongyang for a show of strength with tensions mounting over his nuclear ambitions.
"We stand alongside our global partners in making clear that North Korea must adhere to United Nations resolutions created to secure peace and stability in the region and stop its pursuit of nuclear weapons".
North Korea also warned it is "ready to hit back with nuclear attacks" should the U.S. make any provocative action, according to the BBC.
All eyes are on the Trump administration's plans for North Korea, with concern growing since last week's U.S. missile strike in Syria, in response to a deadly gas attack.
Newspapers this morning expressed fears of nuclear tests as Pyongyang warned it was prepared to take "the toughest action" against U.S. "military hysteria".
China, whose foreign minister met his French counterpart in Beijing on Friday, has said it wants to cooperate with Russian Federation to calm tension over North Korea as quickly as possible and bring all parties to the negotiating table.
Trump tweeted about North Korea on Thursday.
"Our toughest counteraction against the US and its vassal forces will be taken in such a merciless manner as not to allow the aggressors to survive", the official said, according to North Korea's state news agency.
Mr Kim, looking relaxed in a dark suit and laughing with aides, oversaw the festivities on the "Day of the Sun" at Pyongyang's main Kim Il-sung Square.
The isolated dictatorship's state-run TV showed what appeared to be several KN-08 and KN-14 missiles rolled out on trucks at the parade.
"The missile blew up nearly immediately", the US Defence Department said of the early morning launch which was also monitored by the South Korean military.
The parade also included large rockets covered by canisters in two different types of transporter erector launcher trucks, or TELs.
North Korea showed off a series of new and technologically advanced missiles and launchers during a military parade on Saturday.
By Friday, the world had begun to brace itself for a potential war should the US respond to any weapons testing with a unilateral strike.
Kim emphasizes nuclear weapons as the foundation of his national defense strategy.
Melissa Hanham, a senior research associate at the USA -based Middlebury Institute of International Studies at Monterey, California, said the appearance of ICBMs enclosed in canister launchers suggested Pyongyang was working towards a "new concept" of ICBM.
You may also recall the recent response to the US and South Korea conducting drills with the USS Carl Vinson, a Navy supercarrier with nuclear capability, being involved.
North Korea also launched a long-range rocket past year that put a satellite into orbit, which Washington, Seoul and others saw as a banned test of missile technology.