Pro-Russian separatists defiant ahead of Geneva talks on Ukraine crisis
Pro-Moscow fighters fly the Russian flag on Ukrainian combat vehicles, while Nato says it plans to deploy more forces in eastern Europe

An operation by Ukrainian forces to reassert control over its eastern regions floundered on Wednesday in the face of pro-Russian resistance, a day ahead of international talks on the escalating crisis.
A concerned Nato said it planned to deploy more forces in eastern Europe and called for Russia to stop "destabilising" the former Soviet satellite, which has been in deep turmoil since the ousting of the pro-Kremlin leadership in February.
Russian President Vladimir Putin has warned that Kiev's decision to send in troops this week to put down a separatist uprising in its industrial heartland had dragged the country to the brink of civil war.
Watch: Ukraine army vehicles blocked by pro-Russians