A body of rules and principles of action which are binding upon civilized states in their relations with another
Schwarzenberger's Definition of International Law
The body of legal rules which apply between sovereign states and such other entities as have been granted international personality
Modern Definition of International Law
The law that deals with the conduct of States and International Organizations, their relations with each other and, in certain circumstances, their relations with persons
Divisions of International Law
Laws of peace
Laws of war
Laws of neutrality
Laws of peace govern the normal relations of states
Laws of war govern the relations between hostile or belligerent states during wartime
Laws of neutrality govern the relations between a non-participant state and a participant state during wartime, as well as the relations among non-participating states
Differences between Public International Law and Private International Law
As to nature: International not municipal
As to remedies: International modes not local tribunals
As to Parties: International entities not private persons
As to Enforcement: International Sanctions not local sheriff/police
Private International (or Conflicts of Laws) is not really a branch of international law, but deals with disputes that arise from private transactions between individuals or companies or corporations from one country vis-à-vis their counterparts in another country
Differences between International Law and Municipal Law
Monists: No substantial distinction between international law and municipal law, international law must prevail
Dualists: Domestic and international law are independent of each other, no conflict can ever arise because the 2 systems are mutually exclusive
The Philippines is a dualist state
Differences between Municipal Law and International Law
Municipal Law: Issued by a political superior, consists of enactments, regulates relations of individuals, violations redressed through local process, breaches entail individual responsibility
International Law: Not imposed but adopted by states, derived from custom/conventions/principles, applies to relations of states/international persons, questions resolved through state-to-state transactions, responsibility is collective on the state
Theories on Adopting International Law as Part of Local Law
Doctrine of Incorporation: International laws are adopted as part of municipal law by affirming their recognition in the constitution
Doctrine of Transformation: Generally accepted rules of international law must first be embodied in local legislation
To resolve conflicts between international law and municipal law, the attempt should be to reconcile the contradiction and give effect to both systems if possible, presuming municipal law is enacted with respect for international law
In the Philippines, the constitution authorizes the Supreme Court to decide cases involving the constitutionality of any treaty, international or executive agreement, or law
Bases of International Law
Naturalist school: There is a natural and universal principle of right and wrong
Positivists: Binding force derived from agreement of sovereign states
Eclectics or Grotians: Both law of nature and consent of states
Sanctions of International Law
Belief in the reasonableness of international law and shared conviction of its benefits
Habit of obedience ingrained in the nature of states as social beings
Respect for world opinion and desire to maintain goodwill
Fear of retaliation from other states
Machinery of the UN as a deterrent
Functions of International Law
Establish peace and order in the community of nations
Promote world friendship by levelling barriers
Encourage international cooperation on common problems
Provide for orderly management of state relations
In the domestic sphere, the constitution, legislative enactments, and case law constitute the sources of law, but it is more complicated in the international sphere with no legislature or constitution
Primary/Direct Sources of International Law
Treaties/conventions
International customs
General principles of law recognized by civilized nations
Secondary/Indirect Sources of International Law
Decisions of courts
Writings of publicists
The doctrine of stare decisis (precedent) is not applicable in international law
International Community
The body of juridical entities which are governed by the law of nations, composed not only of states but also other international persons
Subjects of International Law
States
Colonies and dependencies
Mandates and trust territories
The Holy See (Vatican City)
The United Nations
Belligerent communities
International administrative bodies
Individuals
Object of International Law
The person or thing in respect of which rights are held and obligations assumed by the subject
Elements of a State
Permanent population
Defined territory
Government
Capacity to enter into relations with other states
Classification of States
Independent States: Simple States, Composite States
Neutralized States
Sovereignty
Independence, freedom from outside control in the conduct of foreign and internal affairs
Independent states
Not subject to dictation from others in their foreign affairs
Types of states
Simple states
Composite states
Neutralized states
Dependent states
Simple state
Placed under a single and centralized government exercising power over both its internal and external affairs
Composite state
Two or more states, each with its own separate government but bound under a central authority exercising control over their external relations
Neutralized state
An independent state, whether simple or composite, that has its integrity and independence guaranteed by other states provided it refrains from hostile activity except for defensive purposes
Dependent state
An entity which does not have full freedom in the direction of its external affairs, falling into two categories: protectorate and suzerainty
Real union
Two or more states merged under a unified authority to form a single international person
Federal union
A combination of sovereign states which upon merger cease to be states, resulting in the creation of a new state with full international personality to represent them in external relations and power over domestic affairs
Confederation
An organization of states which retain their internal and external sovereignty while delegating power to the collective body for certain limited purposes
Personal union
Two or more independent states brought together under the rule of the same monarch, who does not become one international person representing them
Incorporate union
Two or more states under a central authority empowered to direct both their external and internal affairs and possessed of a separate international personality