乌克兰外交消息人士：需要采取建立信任的措施，包括让乌克兰儿童和平民返回。

Core Viewpoint - The need for trust-building measures is emphasized, including the return of Ukrainian children and civilians [1] Group 1 - Diplomatic sources from Ukraine highlight the importance of establishing trust in the ongoing situation [1] - The return of Ukrainian children and civilians is identified as a critical step in fostering peace [1]