Aliens — Position of — Long residence in forum State — Whether establishing special status — Circumstances justifying expulsion after long residence — The law of Germany.

Aliens — Expulsion of — Right of expulsion — Conditions of exercise of right — Expulsion after long residence — Circumstances justifying expulsion — Relevance of treaties concluded by expelling State — European Convention on Establishment — European Convention for Protection of Human Rights — Requirement of proportionality — The law of Germany.