Русско-англо-русский юридический словарь

You may not enter the security area without authorization. (Oxford Advanced Learner's Dictionary)

An act of aggression is defined as the use of armed force by one State against another State without the justification of self-defense or authorization by the Security Council. (iccnow.org)

A work permit is generally a legal authorization from a country's government which allows a non-citizen to take a job within that country. (Wikipedia)

Presidential Message to Congress -- Requirements of the National Defense Authorization Act (whitehouse.gov)