Russian President Vladimir Putin promised members of his ruling United Russia party congress on Sunday that his government can ensure security amid frequent Ukrainian attacks.

Putin: 'We will undoubtedly overcome all the challenges facing us today'

"Yes, we see the problems, we are aware of them and are responding to them, but we will certainly ensure the security of both the country and our citizens, as well as the inviolability of Russia's borders," Putin said.

"We will undoubtedly overcome all the challenges facing us today, including terrorist attacks on our territory and infrastructure facilities," Putin continued.

Putin's statements come as Ukraine has scaled up its long-range drone attacks on Russian oil refineries, weapons factories and logistics infrastructure.