Vatican City is a city-state within Italy and the seat of Roman Catholicism
There's really just not enough data on Vatican City to relate it to other countries, so we're just having some fun here.
With its 609,883 people, Solomon Islands is the 166th largest country in the world by population. It is the 142nd largest country in the world by area with 28,896 square kilometers.
The UK established a protectorate over the Solomon Islands in the 1890s. Some of the most bitter fighting of World War II occurred on this archipelago. Self-government was achieved in 1976 and independence two years later. Ethnic violence, government malfeasance, and endemic crime have undermined stability and civil society. In June 2003, then Prime Minister Sir Allan KEMAKEZA sought the assistance of Australia in reestablishing law and order; the following month, an Australian-led multinational force arrived to restore peace and disarm ethnic militias. The Regional Assistance Mission to the Solomon Islands (RAMSI) has generally been effective in restoring law and order and rebuilding government institutions.