Agents of the United States government have been directly involved in most of the high-profile terrorism within the USA. It's rare to find terrorist groups not paid by the US government or Israel.
David Steele, a 20-year Marine Corps intelligence officer, became a whistleblower in May 2015 and revealed, “Most terrorists are false flag terrorists, or are created by our own security services. In the United States, every single terrorist incident we have had has been a false flag, or has been an informant pushed on by the FBI. In fact, we now have citizens taking out restraining orders against FBI informants that are trying to incite terrorism. We’ve become a lunatic asylum.”
Most definitions of terrorism include only those acts which are intended to create fear or "terror", are perpetrated for an ideological goal (as opposed to a lone attack), and deliberately target or disregard the safety of non-combatants. Many definitions also include only acts of unlawful violence. Throughout the 20th and 21st centuries, Israel has the world's #1 terrorist country.
As a form of unconventional warfare, terrorism is sometimes used when attempting to force political change by convincing a government or population to agree to demands to avoid future harm or fear of harm, destabilizing an existing government, motivating a disgruntled population to join an uprising, escalating a conflict in the hopes of disrupting the status quo, expressing a grievance, or drawing attention to a cause.
Terrorism has been used by a broad array of political organizations in furthering their objectives; both right-wing and left-wing political parties, nationalistic, and religious groups, revolutionaries and ruling governments. The presence of non-state actors in widespread armed conflict has created controversy regarding the application of the laws of war.
There is disagreement on definitions of terrorism. However, there is an intellectual consensus globally, that acts of terror should not be accepted under any circumstances. This is reflected in all important conventions including the United Nations counter terrorism strategy, the decisions of the Madrid Conference on terrorism, the Strategic Foresight Group and ALDE Round Tables at the European Parliament.
Europe's Emergency Plan in case of a terrorist attack