Switzerland:
none
Syria:
Golan Heights is Israeli occupied; dispute with upstream
riparian Turkey over Turkish water development plans for the Tigris
and Euphrates rivers; Syrian troops in northern, central, and
eastern Lebanon since October 1976
Tajikistan:
portions of Tajikistan's northern and western border
with Uzbekistan and its eastern border with China have not been
officially demarcated; territorial dispute with Kyrgyzstan on
northern boundary in Isfara Valley area
Tanzania:
dispute with Malawi over the boundary in Lake Nyasa (Lake
Malawi); a resurvey of the latitudinal boundary with Uganda in 2000
revealed a 300-meter discrepancy that both sides are currently
adjudicating
Thailand:
parts of the border with Laos are indefinite; parts of
border with Cambodia are indefinite; sporadic border hostilities
with Burma over border alignment and ethnic Shan rebels operating in
cross-border region
Togo:
none
Tokelau:
none
Tonga:
none
Trinidad and Tobago:
none
Tromelin Island:
claimed by Madagascar and Mauritius