THE PRESIDENT'S DAILY BRIEF 4 JUNE 1970

• Document Type: FOIA
• Collection: President's Daily Brief 1969-1977
• Document Number (FOIA) /ESDN (CREST): 0005977492
• Release Decision: RIPPUB
• Original Classification: T
• Document Page Count: 15
• Document Creation Date: August 14, 2016
• Document Release Date: August 24, 2016
• Publication Date: June 4, 1970

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The President's Daily Brief
4 June 1970
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FOR THE PRESIDENT ONLY
LATE ITU
CAMBODIA
According to a report from the US Embassy in
Phnom Penh, a Communist force of undetermined size
captured the village of Setbo Leu, about ten miles
southeast of the Cambodian capital, early today.
Few details are available, but air support is being
used in an effort to halt the advance. This is the
closest Communist move to date toward Phnom Penh.
The fact that the thrust coincided with the arrival
in Phnom Penh of South Vietnamese Vice President Ky
suggests that it was intended to cause maximum polit-
ical embarrassment to the Lon Nol regime. It prob-
ably does not represent a serious military threat to
the security of the capital.
The embassy also reported that in the north, the
city of Kompong Thom has come under attack from three
sides and that part of it is in enemy hands. There
has been a buildup of Communist forces around the city
in recent days and government defenders there have
been predicting an assault.
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THE PRESIDENT'S DAILY BRIEF
4 June 1970
PRINCIPAL DEVELOPMENTS
The deployments of Vietnamese Communist main force
infantry units since allied cross-border operations
commenced in late April
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Page 1.
The Communists moved sizable quantities of supplies
through the Laos panhandle last month, but relatively
few new troops were introduced into the infiltration
system. (Page 3)
In Bonn
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? (Page 4)
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Argentine
(Page 5)
The Soviet performance at the four-power talks Tues-
day is viewed as another manifestation of the tough
line Moscow has recently been taking on the Middle
East to force concessions from Israel. (Page 6)
Latin American reactions to the US plan to limit
national jurisdictions over the continental shelf
are summarized on Page 7.
in Turkey. (Page 7)
FOR THE PRESIDENT ONLY
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Movement of Enemy Units - 30 April-3 June
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98750 6-70 CIA
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FOR THE PRESIDENT ONLY
SOUTH VIETNAM - CAMBODIA
There has been a general movement of Com-
munist main force infantry units from
their long-time safehavens along the South
Vietnamese - Cambodian border since allied
cross-border operations began in late
April. Communications intelligence pro-
vides a fairly complete picture of these
movements, which involve some 11 enemy
regiments and their respective divisional
headquarters. With few exceptions, these
elements have moved to the west or north-
west--deeper into Cambodia.
Most, but not all, of these relocations appear
to have been in direct response to allied operations,
reflecting the enemy's anxiety to avoid contact while
dropping back to more secure areas. At least five
first-line combat regiments which have pulled back
from the border remain inside the 21.7-mile limit on
US operations, These units evidently elected to
disperse and seek cover to avoid detection. Another
regiment--the North Vietnamese 95C--remains just
across the border from western Tay Ninh Province,
but continues to move about within Base Area 354.
Only one regiment--the North Vietnamese 209th--
actually moved from Cambodia back into South Viet-
nam, where it posed a threat to allied positions
in northernTay Ninh Province before moving back
into Cambodia on ,1 June. Although elements of the
North Vietnamese 24th Regiment have been moving
supplies in the far reaches of northeastern Cambo-
dia, most of the enemy's forces that are normally
deployed along the. border opposite South Vietnam's
central highlands have been operating for some time
farther to the.north-in Kontum Province and adjacent,
areas of Laos..
In at least one instance, an enemy unit which
has apparently sought to evade' allied sweeps has at
the same time put itself in position to increase
pressure in a key sector- of Cambodia. This unit,
the North Vietnamese 101D Regiment, left its base
area in the Seven. Mountains region of Chau Doc
Province and movedmore than 25 miles into southern
Cambodia. Because a sister regiment--the 1'8B--re-
mained behind, we suspect that the westward move of
the 101D was intended to improve the Communists'
military position near the coast.
(continued)
1
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FOR THE PRESIDENT ONLY
Two Communist regiments that normally operate.
in South Vietnam's III Corps have' been involved in
offensive operations against major Cambodian targets.
The 5th Division's 275th Regiment helped overrun the
Cambodian provincial capital of Kratie. It has since
crossed the Mekong River and is now well into north-
central Cambodia. The' 9th Division's 272nd Regiment,
meanwhile, has been in combat in northern Prey Veng
Province. Other first-line combat units may have
assisted rear guard and security forces in the
enemy's effort to secure sectors. of northeastern
Cambodia as 'a terminal for logistic, and' reinforce-
ment routes from the north.
Major staff sections of COSVN, including the
main political headquarters, have also withdrawn
deeper into' Cambodia and are now situated near the
Mekong River, some 34 miles north of South Vietnam's
Tay Ninh Province border. It is increasingly appar-
ent that this area is being used as a fall back po-
sition from which enemy staffs can carry on neces-
sary functions until they can drift back closer to
the border.
In sum, the Communists have in most cases re-
sponded skillfully to allied Cambodian operations.
For the most part, key combat forces have used
evasive tactics. In only a few instances have the
Communists chosen to stand and slug it out, and
these occasions may have been diversionary to al-
low larger units to escape. While most enemy units
moved to evade allied operations, a few went on the
offensive against relatively weak Cambodian targets
to gain control of the more remote regions of north-
eastern Cambodian.
2
FOR THE PRESIDENT ONLY
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40,000
North Vietnam:
Total Estimated Infiltration Starts
30,00
1968
20,000 V-4
1969
1970 .
V
.

IV
V
.
10,000 I 1 I
ir-- 1
I
I
JAN FEB MAR
APR MAY
JUN JUL
AUG SEP OCT
NOV
._DEC
.
?
1968
? 1969
1970
JAN
21,000
19,800
13,600
. FEB
18,900 -
25,000
11,700
MAR
32,600 V
17,100
, 10,700
APR
38,900
2,300
2,300 v
. MAY
32,800
1,700
2,400 (Prelim.)
JUN.
23,500
100
- ' .
JUL
V V . 21,800
100
AUG
11,000 '
600 v
SEP
2,200 V
600
OCT
2,800
4,500 .
NOV
5,200
7,300
DEC
30,000
6,300
240,700
85,400
40,700
V98738 6-70 CIA TOTALS
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FOR THE PRESIDENT ONLY
NORTH VIETNAM
The Communists have succeeded in moving sub-
stantial quantities.of supplies through the Laotian
panhandle during May in. spite of rain and bombings.
A recently intercepted message shows that shipments
into the 'southern panhandle in the first three weeks
of May averaged 72 tons a day. During May last year
the North Vietnamese were in the process of virtually
closing down their logistics and infiltration system
for the rainy season.
The continued movement of large quantities
of supplies during May, when road condi-
tions deteriorate markedly, underscores
the Communists' determination to make up
the 'losses caused by recent allied opera-
tions.
The three battalion-sized units plus two smaller
groups forecast last week entered the pipeline on
schedule. Infiltration totals for May stand at about
2,400 troops. There are still no indications that
Hanoi intends to increase the flow of replacement
infiltration groups to the South in the near future.
There are some signs, however, that combat
units from the North Vietnamese 304th Division,
now based about 30 miles north of the DMZ, may be
moving southward. The two regiments involved,.the
9th and the 24B, both have, recently been in touch
with. other division components in Quang Tri Prov-
ince, and elements of the 9th were located, in Laos
opposite the DMZ area on 1. June.
The 304th Division already has sent its
66th Regiment to northern South Vietnam.
The southward movement of the other.regi-
ments might be either reinforcements or a
periodic rotation of forces.
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WEST GERMANY
4
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ARGENTINA
5
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Soviet Naval Units Leave Caribbean
UNITED STATES
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GULF OF MEXICO
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two diesel ?subs, and a tanker entered the ---Strhits r BATIA.MA ISLANDS
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98739 6-70 CIA ,
VENEZUELA
GUYANA
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FOR THE PRESIDENT ONLY
NOTES
USSR - Middle East: we took note of
the hard line Soviet propagandists are currently tak-
ing on the Middle East, speculating that this was
part of a bid by the Kremlin to squeeze concessions
out of Israel. The Soviet performance at Tuesday's
session of the four-power talks in New York seems to
be another manifestation of this policy. Deputy So-
viet UN representative Mendelevich claimed the USSR
could no longer accept even minor changes in Israel's
borders with the Arab states. He rationalized this
retreat from the Soviets explicit acceptance on 5
March of minor border alterations on the ground that
the US and Israel were interpreting "rectifications"
too broadly. We share Ambassador Yost's view that
in the end the Soviets would be willing to accept
border changes if the Arabs went along.
USSR: The group of Soviet warships that has
been operating in the Caribbean area for the past
three weeks apparently is returning to home waters.
During their stay, the Soviet ships visited Cien-
fuegos and Havana, and cruised in the Gulf of Mexico.
Arab States: The US is likely to be the ohject
of bitter rhetoric and public demonstrations tomor-
row, the third anniversary of the 1967 war. In fear
that observances in Amman might get out of hand,
King Husayn has successfully bid for postponement of
an "emergency" meeting of heads of Arab states "Con-
fronting" Israel. It was to have opened in Cairo
tomorrow.
Libya: Premier Qaddafi continues his travels.
He is now in Baghdad, where it can be assumed he is
again making his case for an embargo on oil sales
to the US and other "pro-Israeli" countries in the
event we sell more Phantoms to Israel. Damascus
will be his next stop. In Libya, there has been no
break in the impasse between the government and the
oil companies over prices.
6
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1:1;-/TON7UAS
NICARAGUA
FR GUIANA
SUR-
INARI
*Countries claiming
200 nm sovereignty
Approx. 200nm limit
NApprox. 200 meter depth-
US proposed limit
of sovereignty
98729 6-70
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FOR THE PRESIDENT ONLY
Latin America: Peru and Ecuador have already
officially rejected the US plan to limit national
jurisdictions over the continental shelf to a depth
of 200 meters. Chile's foreign minister has publicly
denounced it, and a Brazilian Foreign Ministry spokes-
man has complained that the time is not right to dis-
cuss it. The Mexican foreign minister has said that
the South American countries are putting heavy pres-
sure on his country to follow their lead, but added
that Mexico believes the US proposal is a step for-
ward. Peru, meanwhile, has invited those countries
that attended the Territorial Limits Conference in
Montevideo last month to another conference on sea
rights to be held in Lima from 11 to 15 August.
Turkey:
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/
Top Secret
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