word | | Legal system |
| jurisdiction | Marshall Islands | based on adapted Trust Territory laws, acts of the legislature, municipal, common, and customary laws; has not accepted compulsory ICJ jurisdiction |
| jurisdiction | Mauritania | a combination of Islamic law and French civil law; has not accepted compulsory ICJ jurisdiction |
| jurisdiction | Mauritius | based on French civil law system with elements of English common law in certain areas; accepts compulsory ICJ jurisdiction with reservations |
| jurisdiction | Mexico | mixture of US constitutional theory and civil law system; judicial review of legislative acts; accepts compulsory ICJ jurisdiction with reservations |
| jurisdiction | Micronesia, Federated States of | based on adapted Trust Territory laws, acts of the legislature, municipal, common, and customary laws; has not accepted compulsory ICJ jurisdiction |
| jurisdiction | Moldova | ... civil law system; Constitutional Court reviews legality of legislative acts and governmental decisions; accepts many UN and Organization for Security and Cooperation in Europe (OSCE) documents; has not accepted compulsory ICJ jurisdiction |
| jurisdiction | Monaco | based on French law; has not accepted compulsory ICJ jurisdiction |
| jurisdiction | Mongolia | ... case-precedent may be used to inform judges, but all decisions must refer to the law as written; constitution ambiguous on judicial review of legislative acts; has not accepted compulsory ICJ jurisdiction |
| jurisdiction | Montenegro | based on civil law system; has not accepted compulsory ICJ jurisdiction |
| jurisdiction | Morocco | based on Islamic law and French and Spanish civil law systems; judicial review of legislative acts in Constitutional Chamber of Supreme Court; has not accepted compulsory ICJ jurisdiction |
| jurisdiction | Mozambique | based on Portuguese civil law system and customary law; has not accepted compulsory ICJ jurisdiction |
| jurisdiction | Namibia | based on Roman-Dutch law and 1990 constitution; has not accepted compulsory ICJ jurisdiction |