The President of Russia, Vladimir Vladimirovich Putin, responded to strikes on Russian territory that came from Ukraine and ordered his army to respond to those attacks as a priority.

Putin said this during a government meeting on the reconstruction of destroyed residential buildings and infrastructure in the regions of southwestern Russia.

"Of course, the priority task is to eliminate the very possibility of shelling, but that is the work of the military department," Putin said.

He added that the Russian regions of Belgorod, Bryansk and Kursk, as well as Crimea, which Russia seized from Ukraine and annexed in 2014, were areas where residential buildings were damaged or destroyed.

"Many people found themselves in a difficult situation, lost their homes, were forced to move in with relatives or in temporary accommodation, faced interruptions in the supply of water, heating and electricity," he said.

Although Ukraine has not claimed responsibility for the attacks, it has described them as karma for the Russian invasion. The attacks in southern Russia mostly involved military targets such as electrical substations and weapons and fuel depots.

The Kremlin has said that longer-range missiles, reportedly included in an upcoming package of US military aid to Ukraine, will escalate the conflict but not change its course.

A Kremlin spokesman Dmitry Peskov, also told reporters that there are no plans for talks between Russian President Putin and the US president Joe Biden.