Whakaotihia te rerenga e whai ake nei: I te 1373, whai muri i nga whakaekenga kore e toru o te Duke Nui o Lithuania Algirdas ki Muscovy hei waahanga o te
Lithuanian<unk>Muscovite War me te wehewehe o Metropolitan o Kiev i runga i nga waahanga o Muscovite me Litvin (ko te wehewehe i tiimata i te 1316 a kua tino whakawehi i nga ahua i te timatanga o nga 1350). I tukuna a Cyprian e te Patriarch hei "trustee" (kaikauwhau) ki nga Lithuanian me Muscovite Russias me te whaainga ki te whakarite i nga rangatira o Litvin me Tverite me te de facto Muscovite Metropolitan Alexius me te aukati i te wehenga katoa o te Hahi i waenga i a Wilno me Moscow. Tērā pea, i te hotoke o taua tau ano, i tae atu a Cyprian ki Kiev mo te wa tuatahi me etahi atu taone o te Grand Duchy o Lithuania. I te 9 o Poutu-te-rangi 1374 i toro atu ia ki Tver i te whakatapunga o te Pihopa o Tver Euthymius ana i muri mai me Metropolitan Alexius i wehe atu ki Pereslavl-Zalessky. I hoki mai a Cyprian ki Constantinople mai i te Grand Duchy o Lithuania e mau ana i a ia he reta mai i te Karaitiana Orthodox Lithuanian-Ruthenian (Russian) me te tono ki te rangatira rangatira kia whakatapua ia hei Metropolitan o Lithuania.