country flag of Japan

Japan

Theft Ranking
Has Weapons-Usable Nuclear Materials
Change+4
Score78
Rank13

Summary

Japan is the most improved state in the theft ranking, increasing its score by 4 points from 2014, and is ranked 13th. Japan improved by ratifying the 2005 Amendment to the Convention on the Physical Protection of Nuclear Material, publishing an annual report on nuclear security, and hosting an international peer review. In the future, Japan could further improve its nuclear materials security conditions by updating laws and regulations to reflect the latest IAEA guidelines for securing nuclear materials in transport, requiring more stringent personnel vetting, and requiring cybersecurity tests and assessments. Japan’s nuclear materials security conditions remain adversely affected by its high and increasing quantities of weapons-usable nuclear materials and the large number of sites where those materials are located.


Category & Indicator Scores

Category & Indicators
Rank / Score / Δ

Quantities and Sites
22
=21

Quantities of Nuclear Materials
25
=18

Sites and Transportation
33
=15

Material Production / Elimination Trends
0
=19

Security and Control Measures
82
=9

On-site Physical Protection
100
=1

Control and Accounting Procedures
100
=1

Insider Threat Prevention
67
=6

Physical Security During Transport
50
=12

Response Capabilities
100
=1

Cybersecurity
75
=10

Global Norms
+27
100
=1

International Legal Commitments
+20
100
=1

Voluntary Commitments
100
=1

International Assurances
+60
100
=1

Domestic Commitments and Capacity
96
=7

UNSCR 1540 Implementation
80
=11

Domestic Nuclear Materials Security Legislation
100
=1

Safeguards Adherence and Compliance
100
=1

Independent Regulatory Agency
100
=1

Risk Environment
83
2

Political Stability
90
3

Effective Governance
63
=12

Pervasiveness of Corruption
75
=8

Group(s) Interested in Illicitly Acquiring Materials
100
=1

Legend

= denotes tie in rank
Δ denotes change in score between 2014 and 2016
– denotes no change between 2014 and 2016
All countries are scored 0–100, where 100 = most favorable nuclear security conditions

Note on Scores

Indicator scores equal the sum of the subindicator scores. Scores are then normalized 0-100, where 100 = most favorable nuclear materials security conditions.