ˌɔn twˈɛnti tˈuː dᵻsˈɛmbɚ wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd ˈeɪɾi, ˈɪsə kəŋklˈuːdᵻd ɐ pɹətˈɛktɚɹˌeɪt tɹˈiːɾi wɪððə juːnˈaɪɾᵻd kˈɪŋdəm tʊ ɐbstˈeɪn fɹʌm mˌeɪkɪŋ ˌɛni tɹˈiːɾiz ɔːɹ ɛŋɡˈeɪdʒmənts wɪð ˌɛni ˈʌðɚ fˈɔːɹən pˈaʊɚ ɔːɹ stˈeɪt wɪðˌaʊt bɹˈɪɾɪʃ kənsˈɛnt.
On 22 December 1880, Isa concluded a protectorate treaty with the United Kingdom to abstain from making any treaties or engagements with any other foreign power or state without British consent.