On this fictional island there are three
countries, Abastan, Bacania and Cabany. The border meeting point is
called a tripoint. Abastan has
an exclave surrounded by
Bacanian territory. This is at the same time a Bacanian enclave. Inside
the enclave there is a counter-enclave which is a Bacanian exclave and
an enclave inside the Abastanian exclave. These enclaves we call True
Enclaves. Lake Abacaba between Abastan and Cabany is shared between the
countries. This shared lake is then by international law regarded to be
a condominium. The territory of a country is consisting
from A) the land territory included lakes and rivers, and B) its
territorial waters, which usually make 12 nautical miles (vary from 0
to 200 nm) from the country's baseline.
International Border Definitions
An agreed, defined and
usually demarcated line that separates 1) two
countries, 2) a country (or a depended
territory) and a depended territory of
an another country, or 3) a country (or
a depended territory) and a Terra
Nullius; and its installations.
Provisional Administration Line
A temporary or not
yet clearly defined line between two
territories that are controlled by two
A border or administration line with official points for people to cross, often with guards.
sovereign state or one that is occupied
by another state, as a non-sovereign or
formerly sovereign political division.
The land and
territorial waters under the
jurisdiction of a government.
A point where three
international borderlines meet in one
A territory that is shared between the
jurisdictions of different governments.
A territory which has
never been subject to the sovereignty of
any state, or over which any prior
sovereign has expressly or implicitly
A territory (not a
sovereign state) that is not an integral
part of any state (neither independent,
nor dependent on a single state, nor
colonized or under protectorate, nor a
concession), and yet is not Terra
Nullius, but is the object of an
agreement under international law
between at least two parties (usually
bordering states and/or their colonizers
et cetera) that neither shall establish,
at least for the duration of the
agreement's validity, effective control
On this site country names are coded according to ISO 3166; instead of
Austria we write "AT"; instead of Italy we use "IT" etc. The
border between Austria and Italy is therefore called "ATIT".