July 29, 1991

START: BASIC PROVISIONS OF THE TREATY

START REDUCTIONS

Reductions to equal aggregate levels in strategic offensive arms, carried out in three phases over seven years from the date the treaty enters into force.

Specific, equal interim levels for agreed categories of strategic offensive arms by the end of each phase.

Central limits include:

DELIVERY VEHICLES

WARHEADS

BALLISTIC MISSILE WARHEADS

DOWNLOADING

HEAVY ICBMS

NEW TYPES OF ICBMS AND SLBMS

HEAVY BOMBERS

LONG-RANGE NUCLEAR AIR-LAUNCHED CRUISE MISSILES (LRNA)

MOBILE ICBMS

NON-DEPLOYED MISSILES

EXEMPTIONS FROM TREATY LIMITS

SLCMS

VERIFICATION

The Strategic Arms Reduction Treaty (START) was designed with verification in mind, and verification measures were negotiated in parallel with other aspects. Thus, the basic structure of the Treaty is designed to facilitate verification by national technical means (NTM). The START Treaty contains detailed, interlocking and mutually reinforcing provisions, which supplement national technical means to establish an effective verification regime. This regime provides for data exchanges and notifications on strategic systems and facilities covered by the Treaty, a ban on the denial of data from telemetry, twelve types of on-site inspection and exhibitions, continuous monitoring at mobile ICBM final assembly facilities, and cooperative measures. These elements are outlined below.

DATA DENIAL

TREATY DURATION

NON-CIRCUMVENTION/THIRD COUNTRY ISSUES