“Israeli Prime Minister Benjamin Netanyahu exhorted the United Nations General Assembly on Thursday to draw ‘a clear red line’ to stop Iran from developing nuclear weapons.
In a theatrical gesture, Netanyahu held up a cartoon-like drawing of a spherical bomb and drew a red line below the fuse, ‘before Iran completes the second stage of nuclear enrichment to make a bomb,’ he said.”

Source: Netanyahu asks U.N. to draw ‘red line’ on Iran’s nuclear bomb plans – CNN.com