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North Korean leader Kim Jong Un declared Saturday that his country was ready to stand up to any threat posed by the United States as he addressed a lavish military parade to mark the 70th anniversary of the ruling Communist party.

The parade, which featured thousands of goose-stepping soldiers and military hardware including missiles and drones mounted on trucks, kicked off what is expected to be one of the North's biggest celebrations ever — an attention-getting event that is the government's way of showing the world and its own people that the Kim dynasty is firmly in control and its military a power to be reckoned with.

Kim, clad in black, walked down a red carpet and saluted his honor guard. He then walked up to a podium and waved to the troops taking part in the parade in Pyongyang's Kim Il Sung Square. Visiting Chinese official Liu Yunshan stood clapping to Kim's left, with senior North Korean officials on Kim's right. Kim smiled as he spoke with Liu through an interpreter.

North Korean leader Kim Jong Un, right, stands with visiting Chinese official Liu Yunshan during Saturday's huge parade. Wong Maye-E / AP

Kim then delivered a speech in which he said North Korea would stand up to the U.S., issuing the type of fiery rhetoric that is commonly used by the North.

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"Our revolutionary force is ready to respond to any kind of war the American imperialists want," said Kim, whose speech was interrupted by applause several times.

Photos: Lavish Parade Marks North Korean Anniversary

"Through the line of Songun (military-first) politics, our Korean People's Army has become the strongest revolutionary force and our country has become an impenetrable fortress and a global military power," he said.

After his speech, thousands of soldiers held up colored cards to spell out "Songun politics" and "Defending our homeland."

In a military parade that followed, tanks, armored vehicles, rocket launchers and a variety of missiles mounted on trucks rolled by, while military planes flew in formation above the square, forming the symbol of the Workers' Party of Korea — a hammer, brush and sickle. Another group of planes formed the number 70 in the sky.

An expert at the Korea Institute for Defense Analysis, a security think tank in Seoul, Jin Moo Kim, said North Korea revealed a new 300-millimeter rocket launcher and drones. It also displayed a KN-08 ballistic missile, with an estimated range of 6,200 miles that the country had previously shown off in 2012. Kim said the presence of Liu might have prevented the North from revealing its most provocative weapons.

Thousands of civilian marchers followed, holding colored cards to spell out Kim's name, and he responded by waving to the crowd and holding the hand of Liu, the visiting Chinese official.

The guest list was less impressive. While no world leaders attended — North Korean ally China sent Liu, a senior Communist Party official, not its head of state, or even vice premier — the normally isolated and quiet North Korean capital has been flooded by tourists, international media and delegations ranging from ethnic Koreans living abroad to obscure Russian and Mongolian groups dedicated to studying North Korea's political ideas.

North Korean soldiers in historical uniforms take part in Saturday's huge parade. Wong Maye-E / AP

As the clock struck midnight Friday, Kim marked the anniversary by paying respect to both his late father and grandfather at the Kumsusan Palace of the Sun in Pyongyang, according to the North's official Korean Central News Agency, or KCNA.

For the finale, a stage was set up on a river running through central Pyongyang for a late-night concert featuring North Korea's most popular musical group, the all-female Moranbong Band. Tickets for foreigners hoping to attend the concert were going for $114 a pop.

The spectacle promised to be the most elaborate since Kim assumed power after the death of his father, Kim Jong Il, in late 2011, and the satellite imagery suggests the military parade could be the country's biggest ever.