How Strong is Military of North Korea

How Strong is Military of North Korea?
Pyongyang promised to respond to any military provocation after the United States deployed naval units near the Korean peninsula.
Recently, under a shower of applause and trumpet music, a video broadcast in an amphitheater of North Korea full of military displays nuclear missiles being launched by the country to the United States, where a large explosion is exhibited. The applause does not end, and Kim Jong-un greets everyone.
This has not been the only time that the North Korean leader has sought to intimidate the Americans. In fact, Kim Jong-un has said that his country can "sweep Manhattan (New York City) off the map" and has threatened to transform the United States "in ashes" if it attacks North Korea first. However, these statements raise doubts.
So, what is the power of North Korea compared to the United States and South Korea, its biggest enemy? How big is the Army that is so challenging?
With 700,000 men in service and another 4.5 million in reserve, North Korea is ready to call up a quarter of its population at any time.
What is the nuclear capacity of North Korea?
North Korea conducted five nuclear bomb tests. The last, on September 9, 2016, was about the size of the bomb the United States threw over Nagasaki in 1945. Pyongyang said that the device was to be miniaturized and standardized for use in ballistic missiles.
This year, the Kim Jong-un government proved to have the ability to launch an intercontinental ballistic missile (ICBM) in two tests. The most recent, on July 28 - 2017, exhibited a missile with a theoretical range of 10,000 kilometers, which could affect much of the United States and Europe, including cities such as New York and Paris.
How Big and Strong is Military?
One of the largest Armies:
With 700,000 men in service and another 4.5 million in reserve, North Korea is ready to call up a quarter of its population at any time. All men in the country must perform some form of military training and should always be available to take up arms. It is estimated that, in troops, its superiority is 2 to 1 compared to South Korea.