Ruto threatened him to do that for Kenya democracy and country to look good internationally during a phone conversation. They were both digging in but Ruto told him the consequences of him continuing his digging were destructive, especially now that he had no leverage. Had Ruto not forced him to do the right thing, they would have met at Kasarani, or Uhuru may have not shown up. Uhuru alone could not pull such a good thing! Ruto wrote his 2002 concession speech and today's indirectly for the most part