"The UN Security Council resolution has clear rules on (North Korea's) use of ballistic missiles technologies", she said.
North Korea tested a new type of missile that could strike attacking warships, said the North's official Korean Central News Agency on Friday.
Experts said the new anti-ship missile has four launching canisters.
The rocket, tested from a tracked mobile launcher, was a new weapon North Korea displayed for the first time in a military parade earlier this year, KCNA said.
THAAD is designed for high-altitude extra-atmospheric interception of short and medium-ranged missiles and can be potentially used against North Korean ballistic missiles.
Rand Corporation defense analyst Bruce Bennett told VOA that the missiles in Thursday's test were probably too small to be able to carry a nuclear warhead.
Japan's navy and air force conducted military drills with two US aircraft carriers in the Sea of Japan last week, following similar joint U.S.
Trump administration order threatens quality apprenticeships for NC workers
President Donald Trump is having lunch with Republican senators to discuss the repeal and replacement of the Affordable Care Act. The Obama Administration failed to push these programs with the vigor that President Trump and his administration have shown.
Before Thursday's launch, Kim had conducted 78 ballistic missile tests since he took power in 2012, of which 61 were considered to be successful, US lawmaker Mike Rogers, chairman of the House Armed Services strategic forces panel, said Wednesday.
Moon has sought to expand cross-border civilian exchanges as a way to improve ties, but North Korea on Monday rejected a Seoul civic group's offer to provide anti-malaria supplies to protest South Korea's support of fresh United Nations sanctions adopted last week.
"The decision to introduce THAAD was made to protect South Korea and the United States forces in South Korea from a growing threat from the North".
A screen shows a news program reporting about North Korea's missile firing from Wonsan, center, Thursday, June 8, 2017, in Tokyo.
The U.S. last week tested a defense system that it said successfully intercepted and destroyed a mock intercontinental ballistic missile.
It is apparent that these threats have motivated the U.S. Missile Defense Agency (MDA) to accelerate its testing of ground-based interceptor missiles (GMD) capable of destroying an ICBM mid-flight.
Thursday's launches came after two US aircraft carriers deployed to waters off the Korean Peninsula as a show of force, recently left the Sea of Japan after holding joint exercises with Self-Defense Forces ships and fighter jets.
While not all of this year's launches have been successful, there is growing unease in the region, and increasingly in the U.S., that Pyongyang is making progress in its plan to put a nuclear warhead on an intercontinental ballistic missile.
Britain's U.N. Ambassador Matthew Rycroft condemned North Korea's "latest provocations" and said "we look forward to working with our council colleagues about the best way to respond to them".