State immunity — Attachment and execution — Whether property in use for sovereign purposes — Jurisdiction claimed on the basis of ownership of property in use for non-sovereign purposes and therefore subject to execution — Embassy, cultural institute and other property — Whether immune from execution

State immunity — Jurisdictional immunity — Distinction between sovereign and non-sovereign activities — Production of nuclear energy — Whether a sovereign activity

Jurisdiction — Territorial — Tort committed outside jurisdiction — Effects within jurisdiction — Whether municipal courts entitled to exercise jurisdiction — Test of whether proceedings in foreign State impossible or unreasonable — Whether proceedings in Soviet Union would automatically be biased or lead to denial of justice

Environment — Action against State regarding environmental damage — Transboundary nuclear pollution — Chernobyl nuclear accident — Whether resident of Austria entitled to compensation for damage to exercise of hunting rights caused by nuclear pollution — The law of Austria