Having agreed on limitations on strategic offensive arms in the Treaty,
Having agreed on additional limitations for the period during which this Protocol remains inforce, as follows:
Each Party undertakes not to deploy mobile ICBM launchers or to flight-test ICBMs for suchlaunchers.
1. Each Party undertakes not to deploy cruise missiles capable of a range in excess of 600kilometers on sea-based launchers or on land-based launchers.
2. Each Party undertakes not to flight-test cruise missiles capable of a range in excess of 600kilometers which are equipped with multiple independently targetable warheads from sea-basedlaunchers or from land-based launchers.
Agreed Statement. Warheads of a cruise missile are independently targetable if maneuvering ortargeting of the warheads to separate aim points along ballistic trajectories or any other flightpaths, which are unrelated to each other, is accomplished during a flight of a cruise missile.
3. For the purposes of this Protocol, cruise missiles are unmanned, self-propelled, guided,weapon-delivery vehicles which sustain flight through the use of aerodynamic lift over most oftheir flight path and which are flight-tested from or deployed on sea-based or land-basedlaunchers, that is, sea-launched cruise missiles and ground-launched cruise missiles, respectively.
First Agreed Statement. If a cruise missile is capable of a range in excess of 600 kilometers, allcruise missiles of that type shall be considered to be cruise missiles capable of a range in excessof 600 kilometers.
First Common Understanding. If a cruise missile has been flight-tested to a range in excess of600 kilometers, it shall be considered to be a cruise missile capable of a range in excess of 600kilometers.
Second Common Understanding. Cruise missiles not capable of a range in excess of 600kilometers shall not be considered to be of a type capable of a range in excess of 600 kilometersif they are distinguishable on the basis of externally observable design features from cruisemissiles of types capable of a range in excess of 600 kilometers.
Second Agreed Statement. The range of which a cruise missile is capable is the maximumdistance which can be covered by the missile in its standard design mode flying until fuelexhaustion, determined by projecting its flight path onto the Earths sphere from the point oflaunch to the point of impact.
Third Agreed Statement. If an unmanned, self-propelled, guided vehicle which sustains flightthrough the use of aerodynamic lift over most of its flight path has been flight-tested or deployedfor weapon delivery, all vehicles of that type shall be considered to be weapon-delivery vehicles.
Third Common Understanding. Unmanned, self-propelled, guided vehicles which sustainflight through the use of aerodynamic lift over most of their flight path and are notweapon-delivery vehicles, that is, unarmed, pilotless, guided vehicles, shall not be considered tobe cruise missiles if such vehicles are distinguishable from cruise missiles on the basis ofexternally observable design features.
Fourth Common Understanding. Neither Party shall convert unarmed, pilotless, guidedvehicles into cruise missiles capable of a range in excess of 600 kilometers, nor shall either Partyconvert cruise missiles capable of a range in excess of 600 kilometers into unarmed, pilotless,guided vehicles.
Fifth Common Understanding. Neither Party has plans during the term of the Protocol toflight-test from or deploy on sea-based or land-based launchers unarmed, pilotless, guidedvehicles which are capable of a range in excess of 600 kilometers. In the future, should a Partyhave such plans, that Party will provide notification thereof to the other Party well in advance ofsuch flight-testing or deployment. This Common Understanding does not apply to target drones.
Each Party undertakes not to flight-test or deploy ASBMs.
This Protocol shall be considered an integral part of the Treaty. It shall enter into force on theday of the entry into force of the Treaty and shall remain in force through December 31, 1981,unless replaced earlier by an agreement on further measures limiting strategic offensive arms.
DONE at Vienna on June 18, 1979, in two copies, each in the English and Russian languages,both texts being equally authentic.
FOR THE UNITED STATES OF AMERICA:
JIMMY CARTER
President of the United States of America
FOR THE UNION OF SOVIET SOCIALIST REPUBLICS:
L. BREZHNEV
General Secretary of the CPSU, Chairman of the Presidium of the Supreme Soviet of the USSR