 Complete the following phrase:  In March 1788, Sotiris reached Preveza where he delivered Russian proclamations to the chieftains of the Souliotes. He recruited numerous persons to man Katsonis fleet destined for the Aegean Sea. He also managed to convince the Souliotes to swear an oath of allegiance to Catherine in September in return for patents granting them military ranks in the Russian army. On 3 March 1790, the leaders of the greatest Souliote clans reconfirmed their oath in written form, promising to fight against the Muslims of Rumelia. In May 1788, Ali the newly appointed pasha of Ioannina received orders to head north to assist the Sublime Porte in its 