state within the Commonwealth

Samoa
constitutional monarchy under native chief

San Marino
independent republic

Sao Tome and Principe
republic

Saudi Arabia
monarchy

Senegal
republic under multiparty democratic rule

Serbia and Montenegro
republic

Seychelles
republic

Sierra Leone
constitutional democracy

Singapore
parliamentary republic

Slovakia
parliamentary democracy

Slovenia
parliamentary democratic republic

Solomon Islands
parliamentary democracy tending toward anarchy

Somalia
no permanent national government; transitional,
parliamentary national government

South Africa
republic

Spain
parliamentary monarchy

Sri Lanka
republic

Sudan
authoritarian regime - ruling military junta took power in
1989; government is run by an alliance of the military and the
National Congress Party (NCP), formerly the National Islamic Front
(NIF), which espouses an Islamist platform

Suriname
constitutional democracy

Svalbard
NA

Swaziland
monarchy; independent member of Commonwealth

Sweden
constitutional monarchy

Switzerland
federal republic

Syria
republic under military regime since March 1963

Taiwan
multiparty democratic regime headed by popularly-elected
president and unicameral legislature

Tajikistan
republic

Tanzania
republic

Thailand
constitutional monarchy

Togo
republic under transition to multiparty democratic rule

Tokelau
NA

Tonga
hereditary 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; began
debating republic status in 1992

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

Viet