The Goths, also suffering, like the besieged, from disease and famine, now resorted to diplomacy. An embassy of three was sent to Belisarius, and offered to surrender Sicily and southern Italy (which were already in Roman hands) in exchange for a Roman withdrawal. The dialogue, as preserved by Procopius, clearly illustrates the reversed situation of the two parties, with the envoys claiming having suffered injustice and offering territories, and Belisarius being secure in his position, dismissive of the Goths' claims, and even making sarcastic remarks at their proposals. Nevertheless, a three-month armistice was arranged in order for Gothic envoys to travel to Constantinople for negotiations. Belisarius took advantage of it and brought the 3,000 Isaurians, who had landed at Ostia, along with a large amount of supplies, safely to Rome. During the armistice, the Goths' situation deteriorated for want of supplies, and they were forced to abandon the "Portus", which was promptly occupied by an Isaurian garrison, as well as the city of Centumcellae (modern Civitavecchia) and Albano. Thus, by the end of December, the Goths were virtually surrounded by Roman detachments, and their supply routes effectively cut. The Goths protested these actions, but to no avail. Belisarius even sent one of his best generals, John, with 2,000 men towards Picenum, with orders to avoid conflict but, when ordered to move, to capture or plunder any stronghold he met, and not to leave any enemy strongholds in his rear.