State immunity — Attachment and execution — Property of foreign State — Premises owned by foreign State and used by diplomatic staff — Whether immune from execution — Relevance of fact that premises in the process of being sold — Test of whether or not the ability of mission to function would be impaired if forced sale of premises permitted — Whether sending State can be required to provide details of use of premises — Whether assurance from ambassador that premises in use for diplomatic functions sufficient

Diplomatic relations — Immunity — Property of foreign State in use by diplomatic staff — Whether subject to execution in receiving State — The law of the Federal Republic of Germany