Leo plays Charlie Brown to the Pentagon's Lucy, trying to persuade the President of the merits of an unsuccessful-to-date Nuclear Missile Defense shield. The President is delighted to learn that unconventional diplomat Lord John Marbury is the new British Ambassador to the United States; Leo, not so much. After accepting an award for women in communications, CJ must tell a comedian supporter of Bartlet to bow out of hosting a reception because of a controversial joke he made years earlier. When Sam acts without Toby's approval to send the President to address environmentalists, Toby devises a way to get an admonishment into the speech without listening to Sam's objections -- Toby does it behind Sam's back.