word | | Legal system |
| compulsory | Singapore | based on English common law; has not accepted compulsory ICJ jurisdiction |
| compulsory | Slovakia | civil law system based on Austro-Hungarian codes; accepts compulsory ICJ jurisdiction with reservations; legal code modified to comply with the obligations of Organization on Security and Cooperation in Europe (OSCE) and ... |
| compulsory | Slovenia | based on civil law system; has not accepted compulsory ICJ jurisdiction |
| compulsory | Solomon Islands | English common law, which is widely disregarded; has not accepted compulsory ICJ jurisdiction |
| compulsory | Somalia | no national system; a mixture of English common law, Italian law, Islamic Sharia, and Somali customary law; accepts compulsory ICJ jurisdiction with reservations |
| compulsory | South Africa | based on Roman-Dutch law and English common law; has not accepted compulsory ICJ jurisdiction |
| compulsory | Spain | civil law system, with regional applications; accepts compulsory ICJ jurisdiction with reservations |
| compulsory | Sri Lanka | a highly complex mixture of English common law, Roman-Dutch, Kandyan, and Jaffna Tamil law; has not accepted compulsory ICJ jurisdiction |
| compulsory | Sudan | ... however, the CPA establishes some protections for non-Muslims in Khartoum; some separate religious courts; accepts compulsory ICJ jurisdiction with reservations; the southern legal system is still developing under the CPA following ... |
| compulsory | Suriname | based on Dutch legal system incorporating French penal theory; accepts compulsory ICJ jurisdiction with reservations |
| compulsory | Swaziland | based on South African Roman-Dutch law in statutory courts and Swazi traditional law and custom in traditional courts; accepts compulsory ICJ jurisdiction with reservations |
| compulsory | Sweden | civil law system influenced by customary law; accepts compulsory ICJ jurisdiction with reservations |