1860s, Emancipation Proclamation (1863)
Context: And by virtue of the power, and for the purpose aforesaid, I do order and declare that all persons held as slaves within said designated States, and parts of States, are, and henceforward shall be free; and that the Executive government of the United States, including the military and naval authorities thereof, will recognize and maintain the freedom of said persons. And I hereby enjoin upon the people so declared to be free to abstain from all violence, unless in necessary self-defence; and I recommend to them that, in all cases when allowed, they labor faithfully for reasonable wages. And I further declare and make known, that such persons of suitable condition, will be received into the armed service of the United States to garrison forts, positions, stations, and other places, and to man vessels of all sorts in said service. And upon this act, sincerely believed to be an act of justice, warranted by the Constitution, upon military necessity, I invoke the considerate judgment of mankind, and the gracious favor of Almighty God.
“Title 18 of the US Code declares it to be a crime to launch a "military or naval expedition or enterprise" from the United States against a country with which the United States is not (officially) at war.”
Killing Hope: US Military and CIA Interventions Since World War II, Chapter 30. Cuba 1959 to 1980s: The unforgivable revolution
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William Blum 17
American author and historian 1933–2018Related quotes
“To the Class of 1901, United States Naval Academy.”
Dedication
The Second Declaration of Havana (1962)
Quoted in Chicano Power: The Emergence of Mexican America by Tony Castro, ISBN 0841503214.
Mission with LeMay: My Story (1965), p. 559.
Source: In full: Al-Qaeda statement http://news.bbc.co.uk/1/hi/world/middle_east/1590350.stm (10th October, 2001)
“Germ warfare against the United States would escalate to war against all humanity.”
Quoted in "The Second Attack on Pearl Harbor" - Page 201 - by Steve Horn - History - 2005.
Conclusion
1880s, Personal Memoirs of General U. S. Grant (1885)
Context: The cause of the great War of the Rebellion against the United States will have to be attributed to slavery. For some years before the war began it was a trite saying among some politicians that 'A state half slave and half free cannot exist.' All must become slave or all free, or the state will go down. I took no part myself in any such view of the case at the time, but since the war is over, reviewing the whole question, I have come to the conclusion that the saying is quite true.
Source: 1940s - 1950s, Introduction to Operations Research (1957), p. 3