North Korea on Wednesday warned against raising the issue of its nuclear weapons program during an upcoming global summit in Seoul, saying it will regard any related statement as a declaration of war. "In the event of a provocation such as a statement regarding the North Korean nuclear issue at the Seoul conference, it will be heinous blasphemy against the great men of Mount Paekdu who left as their will the denuclearization of the Korean Peninsula," the North's Korean Central News Agency said in a dispatch monitored in Seoul. "Any provocation against us will be considered a declaration of war." The communist country claimed the North Korea nuclear issue "does not exist" and has no reason to be discussed at the March 26-27 Nuclear Security Summit that is expected to draw top leaders from nearly 50 nations, including U.S. President Barack Obama and Chinese President Hu Jintao.