The next day, South Korea and the United States warned Pyongyang of launching an equal number of missiles in exchange for six ballistic missiles fired by North Korea.
Their show of strength on Monday is expected to increase tensions on the Korean Peninsula.
According to Reuters, all six of the missiles fired by the United States and South Korea are surface-to-surface missiles. Of these, the United States threw one and South Korea six.
South Korean President Yoon Sook-yal has said his government will respond strongly to any provocations from its northern neighbor.
Speaking at an event in Seoul, he said North Korea’s nuclear and missile programs had reached a point where it was not only a threat to peace on the Korean Peninsula, but also to Northeast Asia and the world.
In recent years, the United States and South Korea have been conducting regular joint military exercises, which have further strained Pyongyang.
Analysts say the new South Korean government, relying on US arms aid, wants Pyongyang to show its strength.
This was not the case during the previous South Korean government.
In recent weeks, North Korea has been seen launching multiple ballistic missiles, including intercontinental ballistic missiles.
They also fired three missiles on May 25 after US President Joe Biden’s visit to Asia.
On Saturday, South Korean and US ships completed their three-day exercise near the international waters off the Japanese island of Okinawa. The USS Ronald Reagan, a 100,000-ton nuclear-powered warship, was among the other warships involved in the exercise.
Shortly after the exercise, North Korea fired six short-range ballistic missiles into the sea off its east coast.
The South’s Joint Chiefs of Staff said the short-range missiles were fired from Pyongyang’s Sunan area.
South Korean President Eun Sook-yal, who came to power last month, agreed with Biden to increase the amount of bilateral military exercises with the United States to deal with North Korea.
North Korea has been critical of the joint exercises since the beginning.
The exercise is an example of the fact that the United States has a “hostile policy” towards Pyongyang, despite its diplomacy.