In modern times, ships and airplanes are hijacked for political reasons as well. The perpetrators of these acts could be described as pirates (for instance, the French term for "plane hijacker" is "pirate de l'air", literally "air pirate"), but in English are usually termed "hijackers". An example is the hijacking of the Italian civilian passenger ship "Achille Lauro" by the Palestinian Liberation Organization in 1985, which is regarded as an act of piracy. A 2009 book entitled "International Legal Dimension of Terrorism" called the attackers "terrorists".