Russian President Vladimir Putin says it is too early to say if a drone which crashed into an apartment block in Romania was Russian and suggested it could have been a Ukrainian drone.
NATO accused Russia on Friday of reckless behaviour and pledged to "defend every inch of allied territory" after Romania said a Russian drone had crashed into an apartment block in the military alliance member state during an attack on neighbouring Ukraine.
"Who in Romania says that this is a Russian drone?" Putin asked reporters at a news conference in Astana, Kazakhstan.
