...but really haven't they all failed.
The one speech that made his career was his 2004 Democrat Convention speech.
1. Washington Post Editorial Board
“President Obama has retrenched U.S. global engagement in a way that has shaken the confidence of many U.S. allies and encouraged some adversaries. That conclusion can be heard not just from Republican hawks but also from senior officials from Singapore to France and, more quietly, from some leading congressional Democrats. As he has so often in his political career, Mr. Obama has elected to respond to the critical consensus not by adjusting policy but rather by delivering a big speech.
In his address Wednesday to the graduating cadets at West Point , Mr. Obama marshaled a virtual corps of straw men, dismissing those who “say that every problem has a military solution,” who “think military intervention is the only way for America to avoid looking weak,” who favor putting “American troops into the middle of [Syria’s] increasingly sectarian civil war,” who propose “invading every country that harbors terrorist networks” and who think that “working through international institutions . . . or respecting international law is a sign of weakness.”///
//4. Daily Mail Online
“Receiving tepid applause and a short standing ovation from less than one-quarter of the audience upon his introduction, Obama argued for a contradictory foreign policy that relies on NATO and the United Nations while insisting that ‘America must always lead on the world stage.’
‘If we don’t, no one else will,’ he insisted.”//