Complex sentence: From late 2002 to 2007, he was Ambassador to U.S. J. D. Levitte presented his ambassadorial credentials to George W. Bush in Washington on December 9 2002.
Split into simpler sentences: From late 2002 to 2007, he was Ambassador to US. J.D.Levitte presented his ambassadorial credentials to George W. Bush in Washington on December 9 2002.