Charlemagne again ignored the Pope's efforts, and soon had the Spoletan and Beneventan troops co-operating with his own against the Greeks. Hadrian obtained no control over Spoleto and Beneventum, and the fact that he does not charge Charlemagne with failing to keep faith with the Blessed Peter casts further discredit on the supposed donation. In Venetia and Istria he had no influence whatever, and his agents were barbarously treated.[134] Corsica never enters his correspondence. His power was confined to the Roman duchy, the exarchate, and the Pentapolis; and even there it was much assailed. It is true that in an hour of resolution he forbade Charlemagne to interfere in an ecclesiastical election at Ravenna, and it was as master of Ravenna that he gave Charlemagne the marbles and mosaics of the old palace. But he complained bitterly that Charlemagne listened to his critics in Ravenna,[135] and he had repeatedly to appeal to Frank authority to enforce his sentences. To the end his letters to Charlemagne were querulous and exacting. A few years before his death he heard that Offa of England was proposing to Charlemagne to depose him, and he protested, with more petulance than dignity, that he had been elected, not by men, but by Jesus Christ.[136] This demoralizing concern for his temporal rights seems to have warped Hadrian's religious temperament and to have left him little time for purely spiritual duties. A single lengthy letter to Spain and a legation to England are all that we have as yet related, and there is little to add. His third exercise of jurisdiction was unfortunate. Irene had restored the worship of images in the East and was eager for a reconciliation with Western Christendom. She invited Hadrian to preside at an Ecumenical Council. His reply was admirable in doctrinal respects, but he annoyed the Greeks by at once claiming all his patrimonies in the East and protesting against the title used by Archbishop Tarasius. They retorted by suppressing part of his letter to the Council of Nicæa (787), at which his Legates presided, and ignored both his requests.