A cross-border raid by Kiev’s operatives has been thwarted, the Russian Federal Security Service has said Kiev’s operatives who had crossed into Russia’s Bryansk Region on Thursday have been forced back into Ukrainian territory and hit with a “massive artillery strike,” the Russian Federal Security Service (FSB) has said.

Moscow is “deeply concerned” by reports that NATO members smuggled Serbian-made rockets into Kiev Claims that Serbian-made ammunition has been delivered to Ukrainian forces are a serious matter, Russian Foreign Ministry spokeswoman Maria Zakharova said on Thursday, adding that Moscow is reserving judgment until all the facts have been established.

Training Ukrainians on Western weapons qualifies, said Dmitry Medvedev after the Bryansk attack Canadian and German troops teaching Ukrainians how to use Leopard tanks already qualifies as participation in the conflict, but sending fighter jets to Poland would mean “direct entry,” former Russian President Dmitry Medvedev said on Thursday.