The Brief and Frightening Reign of Phil — George Saunders

From the #1 New York Times bestselling author of the Man Booker Prize-winning novel Lincoln in the Bardo and the story collection Tenth of December, a 2013 National Book Award Finalist for Fiction.
Welcome to Inner Horner, a nation so small it can only accommodate one citizen at a time. The other six citizens must wait their turns in the Short-Term Residency Zone of the surrounding country of Outer Horner. It's a long-standing arrangement between the fantastical, not-exactly-human citizens of the two countries. But when Inner Horner suddenly shrinks, forcing three-quarters of the citizen then in residence over the border into Outer Horner territory, the Outer Hornerites declare an Invasion In Progress -- having fallen under the spell of the power-hungry and demagogic Phil.

So begins The Brief and Frightening Reign of Phil.  An Animal Farm for the 21st century, this is an incendiary political satire of unprecedented imagination, spiky humor, and cautionary appreciation for the hysteric in everyone.