• (1) the term “international terrorism” means activities that—
  • (A) involve violent acts or acts dangerous to human life that are a violation of the criminal laws of the United States or of any State, or that would be a criminal violation if committed within the jurisdiction of the United States or of any State;
  • (B) appear to be intended—
    • (i) to intimidate or coerce a civilian population;
    • (ii) to influence the policy of a government by intimidation or coercion; or
    • (iii) to affect the conduct of a government by mass destruction, assassination, or kidnapping; and
  • (C) occur primarily outside the territorial jurisdiction of the United States, or transcend national boundaries in terms of the means by which they are accomplished, the persons they appear intended to intimidate or coerce, or the locale in which their perpetrators operate or seek asylum;

US Law definition of terrorism

Watching TV reports (like arranged missile strikes and open discussion of ideas to kill leader of other country) you can come to strange conclusions of how good it matches definition.