Subversion in the context of "Counterterrorism"

Sedition is overt conduct, such as speech or organization, that tends toward rebellion against the established order. Sedition often includes subversion of a constitution and incitement of discontent toward, or insurrection against, established authority. Sedition may include any commotion, though not aimed at direct and open violence against the laws. Seditious words in writing are seditious libel. A seditionist is one who engages in or promotes the interest of sedition.

Because sedition is overt, it is typically not considered a subversive act, and the overt acts that may be prosecutable under sedition laws vary by jurisdiction.

Sabotage is a deliberate action aimed at weakening a polity, government, effort, or organization through subversion, obstruction, demoralization, destabilization, division, disruption, or destruction. One who engages in sabotage is a saboteur. Saboteurs typically try to conceal their identities because of the consequences of their actions and to avoid invoking legal and organizational requirements for addressing sabotage.

Counterterrorism (alternatively spelled: counter-terrorism), also known as anti-terrorism, relates to the practices, military tactics, techniques, and strategies that governments, law enforcement, businesses, and intelligence agencies use to combat or eliminate terrorism and violent extremism.

If an act of terrorism occurs as part of a broader insurgency (and insurgency is included in the definition of terrorism) then counterterrorism may additionally employ counterinsurgency measures. The United States Armed Forces uses the term "foreign internal defense" for programs that support other countries' attempts to suppress insurgency, lawlessness, or subversion, or to reduce the conditions under which threats to national security may develop.

Unconventional warfare (UW) is broadly defined as "military and quasi-military operations other than conventional warfare" and may use covert forces or actions such as subversion, diversion, sabotage, espionage, biowarfare, sanctions, propaganda or guerrilla warfare. This is typically done to avoid escalation into conventional warfare as well as international conventions.

The Office of Strategic Services (OSS) was the first intelligence agency of the United States, formed during World War II. The OSS was formed as an agency of the Joint Chiefs of Staff (JCS) to coordinate espionage activities behind enemy lines for all branches of the United States Armed Forces. Other OSS functions included the use of propaganda, subversion, and post-war planning.

The OSS was dissolved a month after the end of the war. Intelligence tasks were soon resumed and carried over by its successors, the Strategic Services Unit (SSU), the Department of State's Bureau of Intelligence and Research (INR), and the Central Intelligence Group (CIG), the intermediary precursor to the independent Central Intelligence Agency (CIA).

Barisan Sosialis (BS), also known as the Socialist Front, was a left-wing political party in Singapore. It was formed on 29 July 1961 and was officially registered on 13 August 1961 by the leftist faction of the People's Action Party (PAP) who had been expelled under the leadership of Lee Kuan Yew. The prominent founding members of BS were Lee Siew Choh and Lim Chin Siong. It was one of the biggest opposition parties in Singapore during the 1960s. The main objectives of BS, in its own words, were "eradicating colonialism", establishing a "united independent and democratic Malayan nation" comprising the Federation of Malaya and Singapore and "introducing an economic system to promote prosperity and stability in society."

As the PAP consolidated its power during the 1960s, the PAP-led government cracked down on BS, accusing it of pro-communist activities as part of the geopolitical climate of the Cold War. In 1963, as part of Operation Coldstore, over 100 opposition leaders, including Lim, were arrested in preventative and indefinite detention under the Internal Security Act (ISA) with support of the British and Malayan governments. The arrests severely weakened BS, with boycotts by BS MPs to Parliament leading to more arrests throughout 1966 and 1967, most notably Chia Thye Poh. BS would fully boycott the 1968 elections, cementing PAP's political dominance. These crackdowns were justified by the government as a security measure to prevent a communist revolution; Chia himself declared that the means of the struggle would be "street demonstrations, protests and strikes". However, the political crackdowns were also criticised as political suppression, as the BS members did not publicly agitate for communism or subversion.

Salami slicing tactics, also known as salami slicing, salami tactics, the salami-slice strategy, or salami attacks, is the practice of using a series of many small actions to produce a much larger action or result that would be difficult or unlawful to perform all at once.

Salami tactics are a generally subversive strategy used extensively in geopolitics, such as countries attempting to expand their borders, and war games as a method of achieving goals gradually without provoking significant escalation.