Sorry doesn't cut it. Move your artillery out.
Any unprovoked action on Abdullahi while the loan is still being payed off will be treated as an attack on Erinamese soil. (Erinaum "owns" the land until then.)
If you call this payback for his attacks on your ships, the blood will be on your hands. He will not fight you, else his loan increases. In this case, I will be forced to go to war with my ally.