federation but similar in structure to a
federal republic

Syria
republic under an authoritarian military-dominated regime

Taiwan
multiparty democracy

Tajikistan
republic

Tanzania
republic

Thailand
constitutional monarchy

Timor-Leste
republic

Togo
republic under transition to multiparty democratic rule

Tokelau
NA

Tonga
constitutional monarchy

Trinidad and Tobago
parliamentary democracy

Tunisia
republic

Turkey
republican parliamentary democracy

Turkmenistan
republic; authoritarian presidential rule, with little
power outside the executive branch

Turks and Caicos Islands
NA

Tuvalu
constitutional monarchy with a parliamentary democracy

Uganda
republic

Ukraine
republic

United Arab Emirates
federation with specified powers delegated to
the UAE federal government and other powers reserved to member
emirates

United Kingdom
constitutional monarchy

United States
Constitution-based federal republic; strong democratic
tradition

Uruguay
constitutional republic

Uzbekistan
republic; authoritarian presidential rule, with little
power outside the executive branch

Vanuatu
parliamentary republic

Venezuela
federal republic

Vietnam
Communist state

Virgin Islands
NA

Wallis and Futuna
NA

Western Sahara
legal status of territory and issue of sovereignty
unresolved; territory contested by Morocco and Polisario Front
(Popular Front for the Liberation of the Saguia el Hamra and Rio de
Oro), which in February 1976 formally proclaimed a
government-in-exile of the Sahrawi Arab Democratic Republic (SADR),
led by President Mohamed ABDELAZIZ; territory partitioned between
Morocco and Mauritania in April 1976, with Morocco acquiring
northern two-thirds; Mauritania, under pressure from Polisario
guerrillas, abandoned all claims to its portion in August 1979;
Morocco moved to occupy that sector shortly thereafter and has since
asserted administrative control; the Polisario's government-in-exile
was seated as an Organization of African Unity (OAU) member in 1984;
guerrilla activities continued sporadically until a UN-monitored
cease-fire was implemented on 6 September 1991 (Security Council
Resolution 690) by the United Nations Mission for the Referendum in
Western Sahara or MINURSO

Yemen
republic

Zambia
republic

Zimbabwe
parliamentary democracy