The exercises known as Ulchi Freedom Guardian came under verbal attack from North Korea this week, when Pyongyang warned of a "second Korean War" should Seoul and Washington go ahead with the drills. In 2014, during a different military exercise, the North fired Scud missiles in protest.
Two days ago, President Donald Trump described North Korea's decision to delay any military action against the US territory of Guam as a "very wise and well reasoned decision".
Beginning Monday, the USA and South Korea will engage in an 11-day drill that is practice for a possible invasion of North Korea, which is threatening the war games could lead to "catastrophe".
Soldiers of the combined forces take part in a joint military exercise at a beach in Pohang, North Gyeongsang Province on November 12, 2016. It might push North Korean leader Kim Jong-Un to fire missiles aimed at Guam in the United States. South Korean President Moon Jae-in said that its neighbor is crossing the red line with these tests.
North Korea's Central News Agency released a statement citing that if the joint exercises were to proceed then it would spell "catastrophe" for the region. According to officials, it will be attended by about 17 500 people from the United States. In addition to the ROK and US forces, UN Command forces from seven sending states, including Australia, Canada, Columbia, Denmark, New Zealand, the Netherlands and the United Kingdom, will participate in this UFG.
Tensions rose further between the USA and North Korea when the rogue nation said it conducted two successful ICBM tests in late July.
The war games are expected to be finished by August 30.