And the once chatty operative - who was known for kibitzing with reporters, diplomats and political consultants over WhatsApp and in the bar of the Hyatt hotel in Kiev - has gone dark.

这位曾经总爱的特工——他在出了名的喜欢在WhatsApp，在基辅的凯悦酒店的酒吧里与记者、外交官或政治顾——这次却选择了沉默。