AT the Smorgasburg food fair in Williamsburg, Brooklyn, Mikheil Saakashvili motored in fluorescent green sneakers among bearded men with tattoos and women in revealing overalls. They lined up for Cheese Pops, Dun-Well Doughnuts and other local delicacies. He ordered a fresh coconut.

“My friend, one of the biggest sheikhs of the United Arab Emirates, gave Georgia 20,000 palm trees,” Mr. Saakashvili, the former president of Georgia, said as he dropped a straw in the machete-opened fruit and emptied its water with a few deep pulls. “As a personal gift.”

Mr. Saakashvili is in self-imposed exile on North Seventh Street — plotting a triumphant return, even as his steep fall from grace serves as a cautionary tale to the many American government officials who had hoped he would be a model exporter of democracy to former Soviet republics.

Since leaving office last November, this George W. Bush favorite — whose confrontation with President Vladimir V. Putin of Russia led to a disastrous war in 2008 — has commandeered his uncle’s apartment in a tower on the Williamsburg waterfront, where he luxuriates in the neighborhood’s time-honored tradition of mysteriously sourced wealth. When not lingering in cafes, riding his bike across the bridge or spending stag evenings with friends on the Wythe Hotel rooftop, Mr. Saakashvili seizes on the Ukrainian conflict and his experience with Mr. Putin’s wrath as a lifeline back to political relevance.