Complex sentence: In May 1996, bin Laden left Sudan for Afghanistan under pressure from the United States because the meetings failed to reconcile U.S. demands made of Khartoum about its record in aiding, abetting and harboring known terrorist groups and individuals.
Split into simpler sentences: In May 1996, bin Laden left Sudan for Afghanistan under pressure from the United States. The meetings failed to reconcile U.S. demands made of Khartoum about its record in aiding, abetting and harboring known terrorist groups and individuals.