Why did hitler most likely believe germany had a right to invade other countries?

Hitler believed in the Aryan race. He believed they were stronger, more successful, and just better in general. He wanted to rid the world of people who were not of this race, in order to create a "better" world.

Do you have more info about it ? i doubt this is the answer because i don't have all the information but if trouble was brewing in a clinic maybe it was an argument as to which clinic was better or smth of that nature