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Clayton J. Lonetree (born November 6, 1961) is a former U.S. Marine who was court-martialed and convicted of
espionage Espionage, spying, or intelligence gathering, as a subfield of the intelligence field, is the act of obtaining secret or confidential information ( intelligence). A person who commits espionage on a mission-specific contract is called an ...
for the Soviet
KGB The Committee for State Security (, ), abbreviated as KGB (, ; ) was the main security agency of the Soviet Union from 1954 to 1991. It was the direct successor of preceding Soviet secret police agencies including the Cheka, Joint State Polit ...
; he served nine years in prison for
espionage Espionage, spying, or intelligence gathering, as a subfield of the intelligence field, is the act of obtaining secret or confidential information ( intelligence). A person who commits espionage on a mission-specific contract is called an ...
. During the early 1980s, Lonetree was a
Marine Corps Security Guard A Marine Security Guard (MSG), also known as a Marine Embassy Guard, is a member of the Marine Corps Embassy Security Group (formerly Marine Security Guard Battalion), a brigade-sized organization of the United States Marine Corps (USMC) whose de ...
stationed at the
Embassy of the United States in Moscow The Embassy of the United States of America in Moscow () is the diplomatic mission of the United States of America in the Russian Federation. The current embassy compound is in the Presnensky District of Moscow, across the street from the Russ ...
. Lonetree is the first U.S. Marine to be convicted of spying against the United States. Lonetree, who was stationed in Moscow as a guard at the U.S. Embassy in the early 1980s, confessed in 1987 to selling documents to the Soviet Union. Lonetree was seduced by a 25-year-old female KGB officer named "Violetta Seina" in that year. He was then blackmailed into handing over documents when he was assigned to
Vienna Vienna ( ; ; ) is the capital city, capital, List of largest cities in Austria, most populous city, and one of Federal states of Austria, nine federal states of Austria. It is Austria's primate city, with just over two million inhabitants. ...
, Austria, including the blueprints of the U.S. Embassy buildings in Moscow and Vienna and the names and identities of U.S. undercover intelligence agents in the Soviet Union.


Early life and education

Lonetree's father is a Native American of the Winnebago tribe, and his mother is a Native American of the
Navajo The Navajo or Diné are an Indigenous people of the Southwestern United States. Their traditional language is Diné bizaad, a Southern Athabascan language. The states with the largest Diné populations are Arizona (140,263) and New Mexico (1 ...
.


Career

Lonetree was tried in a court martial at
Quantico, Virginia Quantico (; formerly Potomac) is a town in southeastern Prince William County, Virginia, United States. The population was 578 at the 2020 United States Census, 2020 census. Quantico is approximately 35 miles southwest of Washington, D.C., bound ...
and convicted of all 13 counts - six of espionage, three of conspiracy to commit espionage and four of violating general regulations - on August 21, 1987. Lonetree faced the possibility of a life sentence or being executed, but initially received a 30-year sentence with a
reduction in rank Reduction, reduced, or reduce may refer to: Science and technology Chemistry * Reduction (chemistry), part of a reduction-oxidation (redox) reaction in which atoms have their oxidation state changed. ** Organic redox reaction, a redox reac ...
from E-5 to E-1, a fine of $5,000, the loss of all military pay and allowances, and a dishonorable discharge. In 1989, the
Commandant of the Marine Corps Commandant of the Marine Corps may refer to: * Commandant of the Marine Corps (Indonesia) * Commandant of the Netherlands Marine Corps * Commandant of the Philippine Marine Corps * Commandant of the Republic of Korea Marine Corps * Commandant of th ...
, Gen. Alfred M. Gray Jr., wrote a letter to the
Secretary of the Navy The Secretary of the Navy (SECNAV) is a statutory officer () and the head (chief executive officer) of the Department of the Navy, a military department within the United States Department of Defense. On March 25, 2025, John Phelan was confirm ...
recommending that Lonetree's sentence be reduced from 30 to 15 years. Gray wrote that the effect of Private Lonetree's actions "was minimal." In addition, he said, the Marine's motivation "was not treason or greed, but rather the lovesick response of a naive, young, immature and lonely troop in a lonely and hostile environment." Lonetree's sentence was subsequently reduced to 15 years. In May 1991, Lonetree filed an appeal, asking that his conviction and sentence be overturned because he had never learned the identity of one accuser, but this was denied. Some of the serious security breaches at the embassy which were alleged to have been the work of Lonetree were found to have been done by CIA mole
Aldrich Ames Aldrich Hazen Ames (; born May 26, 1941) is an American former Central Intelligence Agency, CIA counterintelligence officer who was convicted of espionage on behalf of the Soviet Union and Russia in 1994. He is serving a life sentence, without th ...
. Lonetree was released in 1996 after serving nine years at the
United States Disciplinary Barracks The United States Disciplinary Barracks (USDB), colloquially known as Leavenworth, is a military correctional facility located on Fort Leavenworth, a United States Army post in Kansas. It is one of two major prisons built on Fort Leavenwort ...
. According to ''Time'' magazine:
Marine Sergeant Clayton Lonetree, 25, was so highly regarded at his job as security guard at the U.S. embassy in Moscow that in November 1985 he was detached for special duty at the Reagan–Gorbachev summit in Geneva. Last week Lonetree sat in a brig at the Marine base at Quantico, Va., suspected by his superiors of helping the Soviet KGB filch classified U.S. documents from diplomatic offices in Moscow and Vienna. Lonetree, authorities said, had an affair with a female
KGB The Committee for State Security (, ), abbreviated as KGB (, ; ) was the main security agency of the Soviet Union from 1954 to 1991. It was the direct successor of preceding Soviet secret police agencies including the Cheka, Joint State Polit ...
agent who was reportedly working as a translator at the embassy.
In 2001, Lonetree testified as an
expert witness An expert witness, particularly in common law countries such as the United Kingdom, Australia, and the United States, is a person whose opinion by virtue of education, training, certification, skills or experience, is accepted by the judge as ...
at the trial of former
United States Army Reserve The United States Army Reserve (USAR) is a Military reserve force, reserve force of the United States Army. Together, the Army Reserve and the Army National Guard constitute the Army element of the reserve components of the United States Armed ...
Colonel George Trofimoff, who was charged with spying for the KGB. After remorsefully describing his own recruitment by the Soviet State, Lonetree publicly sobbed on the witness stand and apologized for his actions.Andy Byers, ''The Imperfect Spy: The Inside Story of a Convicted Spy'', Vandamere Press, (2005). pp. 157–159. Colonel Trofimoff was subsequently convicted of espionage and sentenced to
life imprisonment Life imprisonment is any sentence (law), sentence of imprisonment under which the convicted individual is to remain incarcerated for the rest of their natural life (or until pardoned or commuted to a fixed term). Crimes that result in life impr ...
.


See also

* Honeypot


References

{{DEFAULTSORT:Lonetree, Clayton J. Place of birth missing (living people) 1961 births Living people American people convicted of spying for the Soviet Union Fort Leavenworth United States Marines Navajo military personnel 20th-century Native American people 21st-century Native American people