Rubuta ci gaba don wannan sakin layi - A ranar 5 ga Satumba, 1920, Ministan Harkokin Wajen Poland Eustachy Sapieha ya ba da takardar diflomasiyya ga Kungiyar Al'ummai da ke neman ta shiga tsakani a Yakin Poland-Lithuania. Ya yi iƙirarin cewa Lithuania ta ba da izinin wucewa kyauta ta cikin yankinta don sojojin Soviet kuma saboda haka ya keta tsaka-tsakin da aka ayyana a cikin Yakin Poland da Soviet. Washegari Lithuania ta amsa da bayanin kai tsaye ga Poland wanda Ministan Harkokin Wajen Lithuania Juozas Purickis ya ba da shawarar yin shawarwari game da layin rarrabuwa da sauran batutuwa a Marijampolė. A ranar 8 ga Satumba, yayin taron shiryawa don abin da daga baya ya zama Yaƙin Kogin Niemen
, 'yan Poland sun yanke shawarar yin motsi ta cikin yankin Lithuania zuwa bayan sojojin Soviet. A ƙoƙarin ɓoye shirin kai harin, 'yan diplomasiyyar Poland sun yarda da shawarar yin shawarwari. An fara tattaunawar ne a ranar 16 ga Satumba a Kalvarija, amma ya rushe bayan kwana biyu.