Criminal acts intended or calculated to provoke a state of terror in the general public, a group of persons or particular persons for political purposes;
Art. 3, UN GA Res. 49/60 (1994) on Measures to Eliminate International Terrorism
Criminal acts, including against civilians, committed with the intent to cause death or serious bodily injury, or taking of hostages, with the purpose to provoke a state of terror in the general public or in a group of persons or particular persons, intimidate a population or compel a government or an inter-national organization to do or to abstain from doing any act […].
Art. 3, UN SC Res. 1566 (2004) on Threats to international peace and security caused by terrorist acts