<prompt> Bhala okuqhubekayo kwalesi sigaba - Ngemuva kokutholwa kabusha kwezindawo zamaGrikhi uMbuso Wase-Ottoman, Amandla Amakhulu ngaleso sikhathi uMbuso WaseBrithani, uMbuso WaseRussia kanye noMbuso WaseFrance babona ukuhlaselwa kwamaGrikhi njengethuba lokwenza buthaka uMbuso Wase-Ottoman futhi ngokuyisisekelo bandise ithonya labo eMpumalanga yeMedithera. Amandla Amakhulu asekela iGrisi ukuze iphinde ithole ukuzimela kwayo futhi kulandela impi enqumayo eNavarino Bay  <response>: Kwavunyelwana ngokumisa umlilo eLondon bheka iSivumelwano SaseLondon 1827. Ukuzimela kweGrisi ekugcineni kwaqashelwa yiProtocol yaseLondon ka-1828 kanye nokuzimela kwayo ngokuphelele eMbusweni wase-Ottoman yiProtocol yaseLondon ka-1830. 