What problems did germany experience after world war i?

harsh penalties imposed by the league of nations
loss of some of its territory and all its colonies
forced to accept blame for world war i
poor economic conditions caused by the great depression

All of the above. Germany experienced military penalties, loss of territory and colonies (seperating mainland from Königsberg), blame, and poor economic conditions (including hyperinflation).

to force terrorists groups to stop attacking western targets using massive military force.