Ukraine's NATO membership 'key question' in US-Russia talks: Kremlin

The prospect of Ukraine joining NATO was a "key question" in US-Russia talks in Moscow, the Kremlin said on Wednesday after negotiations with top US envoys brought no sign of a breakthrough.

Kyiv's participation in the alliance was "one of the key questions, it was discussed," top Kremlin aide Yuri Ushakov told journalists, including from AFP, during a briefing.