BOTH!! Invasion via immigration. The moose-limb term is “Hijrah.” It explains in one word why the supposedly desperate refugees don’t head for wealthy nearby countries like Saudi Arabia that share their language and culture.
As a follow up:
http://www.americanthinker.com/articles/2015/09/expediting_national_suicide_with_refugees.html
OOPS!!!! Omitted first link!!
http://moonbattery.com/?p=62786
And another Arabic term enters the vocabulary!