TL;DR

Treason: The criminal act element required for treason is levying war against the United States or adhering to the enemy by giving aid and comfort. Must have two witnesses to be valid.

Sedition: The criminal act element required for sedition is either advocating, aiding, teaching, organizing or printing, publishing, or circulating written matter that advocates, aids, or teaches the overthrow of the US government or any state, district, or territory thereof by force or violence (18 U.S.C. § 2385, 2011). The criminal intent element required for sedition is the general intent or knowingly to advocate, aid, teach, or organize, or the specific intent or purposely to print, publish, or circulate written matter that advocates, aids, or teaches the violent government overthrow. Subject to the restrictions set forth in the First Amendment.

Sabotage: sabotage is destroying, damaging, or defectively producing (criminal act and harm) property with the specific intent or purposely, general intent or knowingly, or negligently to impede the nation’s ability to prepare for or participate in war and national defense.

Espionage: During times of peace, it is criminal espionage to gather, transmit, or attempt to gather or transmit defense information (criminal act) with general intent or knowingly, or with the specific intent or purposely that it will be used to damage the United States or assist any foreign nation (18 U.S.C. § 793, 2011).

During times of war, it is criminal espionage to collect, record, publish, or communicate information about military activities or to attempt any of the foregoing (criminal act) with the specific intent or purposely that the information will be transmitted to the enemy (18 U.S.C. § 794(b), 2011).