积极争取坚持统一战线协议达成双方划界而治“十二月事变”就其性质讲,无疑是对抗日的背叛,是大地主大资产阶级对日妥协的表面化。但在当时民族矛盾仍是主要矛盾,国内阶级斗争处于次要位置的形势下, Actively Striving for Upholding the Agreement on the United Front to Achieve a Bilateral Demarcation and Governance In its nature, the “December Incident” is undoubtedly the betrayal of the Anti-Japanese War and the superficialization of the compromise between the landowners and major bourgeoisie toward Japan. However, when ethnic conflicts were still the major contradictions at that time and the domestic class struggle was at a secondary position,