SEOUL, South Korea (AP) — North Korea said Sunday that it carried out a “very important test” at its long-range rocket launch site that it reportedly rebuilt after having partially dismantled it at the start of denuclearization talks with the United States last year. The announcement comes amid dimming prospects for a resumption of negotiations, with the North threatening to seek “a new way” if it fails to get major U.S. concessions by year’s end. North Korea has said its resumption of nuclear and long-range missile tests depends on the United States. Saturday’s test at the Sohae Satellite Launching Ground will have “an important effect on changing the strategic position of (North Korea) once again in the near future,” an unidentified spokesman from the North’s Academy of National Defense Science said in a statement, carried by the country’s official Korean Central News Agency. North Korea didn’t say what the test included. Kim Dong-yub, an analyst at Seoul’s Institute for Far Eastern Studies, said that North Korea likely tested for the first time a solid-fuel engine for an intercontinental ballistic missile. The use of solid fuel increases a weapon’s mobility and reduces the amount of launch preparation time. The long-range rockets that North Korea used in either ICBM launches or satellite liftoffs in recent years all used liquid propellants. CNN reported Friday that a new satellite image indicated North Korea may be preparing to resume testing engines used to power satellite launchers and intercontinental ballistic missiles at the site. Seoul’s Defense Ministry said in a brief statement later Sunday that South Korea and the United States are closely monitoring activities at the Sohae site and other key North Korean areas. President Donald Trump reacted to the development by saying that North Korea “must denuclearize.” “Kim Jong Un is too smart and has far too much to lose, everything actually, if he acts in a hostile way,” Trump tweeted Sunday.“North Korea, under the leadership of Kim Jong Un, has tremendous economic potential, but it must denuclearize as promised,” he said. Nick Note: Breaking up is so hard to do. Kim Yon Num Chucks made it clear he is NOT NOT NOT giving up the nukes..And why should he? He knows a clown when he see one!!