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TREATIES AND OTHER INTERNATIONAL ACTS SERIES 18-1120 

DEFENSE 

Agreement Between the 

UNITED STATES OF AMERICA 

and JAPAN 

Effected by Exchange of Notes at 

Tokyo November 20, 2018 
 

 

NOTE BY THE DEPARTMENT OF STATE 

Pursuant to Public Law 89—497, approved July 8, 1966 

(80 Stat. 271; 1 U.S.C. 113)— 

“. . .the Treaties and Other International Acts Series issued 

under the authority of the Secretary of State shall be competent 

evidence . . . of the treaties, international agreements other than 

treaties, and proclamations by the President of such treaties and 

international agreements other than treaties, as the case may be, 

therein contained, in all the courts of law and equity and of maritime 

jurisdiction, and in all the tribunals and public offices of the 

United States, and of the several States, without any further proof 

or authentication thereof.” 
 

 

 

 

 

 

JAPAN 

Defense 

Agreement effected by exchange of notes at 

Tokyo November 20, 2018; 

Entered into force November 20, 2018. 
Tokyo, November 20, 2018 

Excellency: 

I have the honor to acknowledge the receipt of Your 

Excellency's Note of today's date, which reads as followe: 

~r have the honor to refer to the Mutual Defense 

Assistance Agreement Between Japan and the United States of 

America, signed at Tokyo on March 8, 1954 (hereinafter

re~erred to as the ·MOA Agreement•), and the arrangements made thereunder that have provided for the reciproc;al 

exchange ot defense-related information, and to recognize that the MDA Agreement provides, inter alia, that each 

Government, consistently with the principle that economic 

stability is essential to international peace and security, 

will make available to the other such equipment, materials, 

services, or other assistance as the Government furnishing such assistance may authorize, in accordance with such 

detailed arrangements as may be made between them. 

I have the honor to refer also to the Agreement 

Between the Government of Japan and the Government of the 

United States of America Concerning Security Measures for 

the Protection of Classified Military Information, signed 

at Tokyo on August 10, 2007 {hereinafter referred to as the •GSOMIA•), which provides, inter alia, that the Governments 

shall protect Classified Military Information provided by 

one Government to the other Government under the terms set 

forth therein and that supplemental implementing 

arrangements may be entered into by competent authorities 

o~ the Governments. 

The Government of Japan desires to obtain and use the 

advanced technology contained in the E-767 Airborne, 

Warning, and Control System with Mission computing Upgrades 

for the purpose ot ensuring the security of Japan. 

The Government of Japan recognizes its need for 

information, including Classified Military Information, 

related to the E-767 -Airborne, Warning~ and-Control System 

with Mission Computing Upgrades from the Government of the 

United States of America in order to use the advanced 

technologies provided under this system. The Government of 

Japan further acknowledges that a -special security program 

is necessary to facilitate the . furnishing of such 

information. Accordingly, the representatives of the 

His Excellency Taro Kono, 

Minister for Foreign Affairs of Jlapan 

DIPLOMATIC NOTE 
Gavermnent of Japan and the Government ot·the onited States 

o~ America ~ve recently held di8CUS&ion$ ' for the purpose of concluding detailed arrangements concerning the security 

and prote~tion of the Classified Military Information 

furnished by the Government of the ·Onited.State• ·of America 

to the Government of Japan that will be necessary tor 

obtaining and using the B-767 Airborne, Warning, ,and 

ContrQl System with Mission Computing upgrades by .the 

~er:nment. ot Japan. The following is the proposal of the 

Govermnent of Japan regarding the results;of. the ·aboVementioned discussions: 

1. Representatives of the competent auttiorities of the 

two Governments sha11 make the detailed implementing 

arrangements concerning the security and'protection of the 

Classified Mil.itary 'Information furnis~ by the ,Govermnent 

of the United States of America to the <kwerxuaent o~ Japan 

that will be necessary for obtaining and ' Using the B-761 

Airborne, warning, _and Control System wi~ Mission 

computing Upgrades by the Government of Japan, which shall 

consist of a memorandum of \Ulderstanding :and any , modifications thereto, which shall be ~lemented according 

to their terms. For such detailed implementing ' 

arrangements, the competent authority ot the Government ot 

Japan is the Ministry of Defense, and the competent authority of the Government of the United. States of America 

is the Department of· Defense. · 

2. All Classif-ied "ilitary Info:rnation .furnished by the 

Government of the United States of America to the 

Government of Japan concerning the E-767 :Airborne, Warning, 

and Control System with Mission Computing Upgrades shall be 

~ject to the security measures set fort}:). in the 

memorandum of understanding and any moditicat.ions thereto. 

3. T};e preaent agreement and all arrangeraenta to be. 

conci.ua.ea nereuru1er e.l:lal.l. :be i.mpl.cmcntec1 . eUDjccc to the 

relevant iaws, regulations, and ~dgetuy appropriations of 

the· respecttve countries and in accordance with the teJ:1118 

of the MDA Agreement and the GSClilIA. 

4 . The present agreement and ali arrangements to be 

concluded hereunder shall remain in force, and the 

obligations of the two Governments shall-continue, !or so 

long as the Government of Japan owns, operates, maintains, 

or otherwise controls the B-767 Airborne ; Warning, and 

Control System with MJ.ssion Computi1:1g ~a!Cks ~ well as 

other related Classified Military rnforma~ion. 

I have the honor to propose that, i~ the above 

proposal is acceptable to the Government :of the united 

States of America, the present Note and Your Excellency's reply of acceptance shall constitute an agreement bet~ 
the two Governments, which shall enter into force on the 

date of Your Excellency's reply. 

I avail myself of this opportunity tp renew to Your 

Excellency the assurance of my highest consideration.• 

I have further the honor to confirm on bel'l,alf of the 

Government of the United States of America tha;t the foregoing 

proposal is acceptable to the Government of the United States of 

America and to agree that Your Excellency's Note and this reply 

shall constitute an agreement between the two Governments, which 

shall enter into force on the date of this reply. 

I avail myself of this opportunity to renew to Your 

Excellency the assurance of my highest consideration. 

Ambass or Extraordinary 

and Plenipotentiary 

of the United States of America 
Translation 

Tokyo, Noii.rember 20,.. 2018 

Excellency, 

I have the honor te> refer to the Mutual Def.en~e 

Assi~tance Agreement Between Japan and the. United States of 

America, signed at Tokyo on March 8 ,. 1954 (hereinaiter 

referred to as the "MDA Agreement"),_ and the arrangements 

made thereunder that have provided for the'reciproqal 

exchange of defense-related inf.ormation, and to re¢ognize 

that the MDA Agreement provides, inter alia, that .each 

Government, consistently with tl.i.e principle that economic 

stability is essential to international pe~ce and se-curity, 

will make available to the other such equipment, mc\terials, 

services, or other assistance as the Government furnishing 

such assistance may authorize, in accordance with $UCh 

detailed arrangements as may be ·made b~tween. them. · 

I have the l:lonor to refer also to the:Agreemerit 

Between the Government of Japan and the Government :of the 

United States of America Concerning· Sec:urity Measures for 

the Protection of Classified Military Information, :signed 

at Tokyo on August 10, 2007 (hereinafter referred tb as the 

"GSOMIA"), which provides, inter alia, that the Go,ternments 

shall protect Classified Military Information provfded by 

one Government to the other Government under the terms set 

forth therein and that supplemental implementing 

arrangements may be entered into by compet~nt c1uthcirities 

of the Governments. · 

The Government of Japan desires to obtain and use the 

advanced technology contained in the E-767 Airborne, 

warning, and Control System with Mission Computing Upgrades 

for the purpose of ensuring the security of Japan. 

His Excellency 

Mr. William F. Hagerty IV 

Ambassador Extraordinary 

anq Plenipotentiary 

of the United States of America 
The Government of Japan recognizes its need for 

information, ipcluding Clas.sified Military'. Information, 

related to the E-767 Airborne, Warning, an<ji Control; System 

with Mission Computing Upgrades from the Government of the 

United States of America in order to· use the advano~d 

technologies provided under this system. The Government of 

Japan further acknowledge.s that a special $ecurity iprogram 

is necessary to facilitate the furnishing ¢f such : 

information. Accordingly, the representatives of tif}e · 

Government of ·Japan and the Government of the United States 

of America..have recently held discussions fqr the purpose 

of concluding detaileq arrangements conceri;iing the:security 

and prot~ction of the Classified Military lnformation 

furnished by the Government of the .United $tates o~ America 

to the Government of Japan ·that will be necessary ~or 

obtaining and using the E-767 Airborne, Watning, and 

Control System with.Mission Computing Upgr,$.des by t;he 

Government of Japan. The following is the 'proposat of the 

Government of Japan regarding the· results of the abovementioned discussions: : 

L Representatives of the competent authorities. qf the 

two G.overnments shall make the detailed implementing 

arrangements concerning the security and protectiori of the 

Cl.assified· Military Information furnished by the Government 

of the United States of America to the Gov(;!rnrnent of Japan that will be necessary for obtaining and u$ing the :E-767 

Airborne, Warning, and Control System with,Mission' 

Computing Upgrades by the Government of Japan, whicih shall 

consist of a. memorandum of understanding an.d any · modifications thereto, which shall be implef)mented according 

to their terms. For such detailed implementing 

arrangements, the competent authority of the Government of 

Japan is the Ministry of Defense, and the competent 

authority of the Government of the United $tate.s o:f: America 

is the Department of Defense. · 

2. All Classified Military Information f~rnished by the 

Government of the United States of America to the · Government of Japan concerning t,he E-767 Airborne, 'Warningl 

and Control System with Mission Computing Upgrades :shall be 

subject to the security measures set forthlin the 

memorandum of understanding and any modi.fications t;hereto. 

3. The present agreement and all arrangements to :be 

concluded hereunder shall be implemented subject to the 

relevant laws, regulations, and budgetary ~ppropriations of 

t.he respective countries and in ac.cordance 'with the terms 

of the MDA Agreement and the GSOMIA. 
4. The present agreement and all arrangelttents to be 

concluded hereunder shall remain in force,'and thei 

obligations of the two Government.s sha1.l continue, Ifor so 

long as the Government of Japan owns, operates., maintains, 

or otherwise controls the E-767 Airborne, Warning, '.ano. 

Control System. with Mission Computing Upgrades as well as 

other related Classified Military Informatton. · 

I have the honor to propose that, if the above 

proposal is acceptable to the Government of the United 

States of America, the present Note and Your Excel].ency's 

reply of acceptance shall constitute an ag.:i=eement between 

the two Governments, which shall enter into. force on the 

date. of Your Excellency's reply. · 

I avail myself of this opportunity tel.renew to Your 

Excellency the assurance of my highest con$ideratiqn. 

Taro Kono 

Minister for Foreign ~ffairs 

of μapan 
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