At the United Nations Millennium Summit in September 2000, Castro and Clinton spoke briefly at a group photo session and shook hands. U.N. Secretary-General Kofi Annan commented afterwards, "For a U.S. president and a Cuban president to shake hands for the first time in over 40 years—I think it is a major symbolic achievement". While Castro said it was a gesture of "dignity and courtesy", the White House denied the encounter was of any significance. In November 2001, U.S. companies began selling food to the country for the first time since Washington imposed the trade embargo after the revolution. In 2002, former U.S. President Jimmy Carter became the first former or sitting U.S. president to visit Cuba since 1928.