instruction:
In this task, you are given a text of the article. Your task is to generate a headline (title) for this article.
question:
the white house on thursday warned iran of possible new sanctions after the un nuclear watchdog reported that tehran had begun sensitive nuclear work at a key site in defiance of un resolutions .
answer:
us warns iran of step backward on nuclear issue


question:
-lrb- wap -rrb- editors this refers to UNK -lrb- lane , post -rrb- moved thursday .
answer:
UNK correction


question:
a top nato commander inspected a disputed military site tuesday after the bosnian serbs bowed to pressure from the alliance-led peace force .
answer:

officials leave for inspection of bosnian serb site eds : UNK with walker UNK after inspection


