Definition: In this task, you are given a text of the article. Your task is to generate a headline (title) for this article.
Input: south korea 's leader on friday hoped to forge unity with u.s. president george w. bush in washington on how to secure north korea 's commitment to nuclear disarmament , as japan fretted that the north 's latest boasts may indicate advances in its nuclear weapons program .

bush south korean president to meet ; UNK frets that north 's nuke program is advancing