[1/2] Oleksiy Danilov, Secretary of Ukraine's National Security and Defence Council, speaks with Reuters during an interview, as Russia's attack on Ukraine continues, in Kyiv, Ukraine July 8, 2022.
REUTERS/Valentyn Ogirenko/File PhotoKYIV, March 15 (Reuters) - An incident involving a U.S. spy drone and a Russian fighter jet is a signal that Russian President Vladimir Putin is ready to expand the Ukraine-Russia conflict zone, a senior Ukrainian security official said on Wednesday.
The U.S. military said on Tuesday a Russian fighter plane had clipped the propeller of a spy drone and made it crash into the Black Sea.
Moscow denied the aircraft had collided and said the drone had crashed after "sharp manoeuvres".
The Ukrainian presidency and government did not immediately offer any official comment on the incident but Oleksiy Danilov, Secretary of Ukraine's National Security and Defence Council, voiced concern on Twitter.