Identify this country: It is a landlocked sovereign city-state whose territory consists of a walled enclave within another city. The current president of its government is Giovanni Lajolo.

Vatican City is a landlocked sovereign city-state - an independent enclave completely surrounded by Rome, Italy. It is the smallest internationally recognized independent state in the world by both area and population. Giovanni Lajolo has served as President of the Governorate (head of government) of Vatican City. Iceland, Greece, and Latvia are full-sized countries, not walled enclaves.