( CNN ) -- North Korea has launched a vitriolic attack on South Korea 's President Park Geun-hye over comments she made about the country 's nuclear program , accusing her of `` blabbering '' like a `` peasant woman . '' At a nuclear security summit in The Hague Monday , Park warned that North Korea 's nuclear devices could end up in the hands of terrorists , and said that a nuclear meltdown at the country 's main nuclear complex in Yongbyon would be more devastating than Chernobyl . In response , a North Korean official said that if the president is serious about improving cross-border ties , she should `` have discretion '' and `` refrain from making reckless remarks . '' The spokesman for North Korea 's Committee for the Peaceful Reunification of Korea accused Park of violating a pact reached at a rare high-level meeting last month , that pledged to end `` slander '' between the two sides . The official accused the president of being a `` faithful servant and stooge '' of the United States , in an English version of the statement published on the website of North Korea 's state-run KCNA news agency Thursday . Although that statement did not contain much of the colorful language reportedly used in an earlier version of the statement . `` Even if someone else wrote the dumb speech for her to read from , she should at least know what and what not to say , '' AFP reported the official as saying Thursday . `` She should realize she is no longer a peasant woman blabbering to herself in the corner of her room but the occupant of the ( presidential office ) , '' the statement said . South Korea 's government said the comments were `` deeply regrettable and lacking in the most basic etiquette . '' The war of words came after North Korea launched two ballistic missiles into the sea off its east coast Wednesday , violating United Nations resolutions that prohibits Pyongyang from conducting such tests . The U.N. Security Council condemned the move Thursday and is considering an `` appropriate response , '' the council 's president U.N . Ambassador Sylvie Lucas told reporters . South Korea 's defense ministry believes the North Korean missile tests were in reaction to the sideline meeting between President Park , U.S. President Barack Obama and Japanese Prime Minister Shinzo Abe at the The Hague 's Nuclear Security Summit Monday , as well as ongoing joint U.S.-South Korean drills around the Korean peninsula . It 's not the first time North Korea has resorting to name-calling against its southern neighbors . A previous attack on Park described the president and her government as `` made up of ignorant hooligans hell-bent on hurting the dignity of the supreme leadership of ( North Korea ) and on eclipsing the bright sunlight . ''
South Korea 's accuses Pyongyang president of slander . President Barack Obama voices concerns over South Korea 's nuclear program . South Korea 's launches two mid-range missiles . U.N. condemns the move , will consider 'appropriate response '