North Korea is preparing to fight a nuclear war in the Korean peninsula against the USA and its allies.
Friday's test was confirmed after reportedly causing a 5.3 magnitude earthquake.
Pyongyang has warned against a U.S.-South Korea military drill.
The U.S. decision to deploy the THAAD system comes after Pyongyang's recent nuclear and missile tests.
The site is the source of plutonium for the country's nuclear weapons program.
The North Korean leader has also banned freedom of movement in the country as security tightens.
The isolated nation has conducted a series of missile launches ahead of the Workers' Party congress on May 6.
The North Korea rocket crashed just moments after takeoff.
North Korea's growing gray market economy is posing a problem for Kim Jong Un and company.
North Korea failed to launch a ballistic missile off the country's east coast.
Mossack Fonseca didn't realise the bank's connection to Pyongyang.
Pyongyang's nuclear testing has already led to the toughest sanctions regime ever placed on the country.
U.S. President Barack Obama calls the sweeping measures a "firm, united" response.
If adopted, the bill will require U.N. members to inspect all cargo going to or from the country.
Park Geun-hye also said the North is "merciless" and under an "extreme reign of terror."
The move has the potential to damage both countries' relations with China.
The South had halted operations at the industrial park in reaction to Pyongyang's missile launch.
U.S. officials say that the satellite, which caused an international outcry, is incapable of any useful function.