MOSCOW, May 30 (Xinhua) -- The drone attack against civilian infrastructure here is "a clear sign of terrorist activity," Russian President Vladimir Putin said Tuesday.
According to a press release issued by the Kremlin, Putin said that Kiev has chosen a different path, namely to try to intimidate Russia and its citizens, and attack local residential buildings.
"They provoke us to mirror actions. Let's see what to do about it," he said.
Russian Defense Minister Sergei Shoigu said earlier on Tuesday that the Russian armed forces are reacting "as harshly as possible to the terrorist attacks of Ukrainian militants."
The Ukrainian side has denied its direct involvement in the attack on Moscow.
Several buildings in Moscow were slightly damaged by the early morning drone attack, said Moscow Mayor Sergei Sobyanin, adding that there were no immediate reports of serious injuries.