Possible Clues:

• Consulate's cousin
• Begin to get them a drink where the country's representative is
• Diplomatic building for ambassadors
• Troubled, maybe, about heartless spies in Foreign Office
• Mission to send me over ship in cove
• Residence of an ambassador
• Diplomatic organisation
• Political asylum site
• Headquarters of diplomatic staff abroad
• BEMs, say, distributed in diplomat's office