When a country’s Government proclaims a national mourning, the Embassy opens a Book of Condolences, normally for three days, at its main seat, and announces the fact by means of a Note verbal sent to local Authorities and to other Diplomatic Representations.
The Government, assisted by the Diplomatic Ceremonial of the Foreign Affairs Ministry, will take all decisions regarding the protocol to be adopted (closure of shops and restaurants, flag at half mast, a minute’s silence, etc). In the event of national mourning also in the country where accreditation has been granted, it is customary for foreign Embassies and Consulates to call off any planned festivities and celebrations and abide by general local provisions.
In Italy State exequies are granted to high offices of State, eminent personalities and persons that have rendered special services to the country, or those killed in battle (when applicable) – Law 36 of 07.02.1987. Mourning, on the other hand, is decided by the city council, and is limited by mode and by territory.