President Vladimir Putin said Wednesday that Russia plans to expand a “security buffer zone” in Ukraine and will achieve its goals through either diplomatic or military means.

"First, the goals of the special military operation will undoubtedly be achieved. We would prefer to do this and address the root causes of the conflict through diplomacy," Putin said.

"If the opposing side and their foreign patrons refuse to engage in substantive discussions, Russia will achieve the liberation of its historical lands by military means. The task of creating and expanding a security buffer zone will also be consistently addressed."

Of the regions of Ukraine that Russia has claimed as its own territory, it currently controls Crimea, around 90% of the Donbas region and 75% of Kherson and Zaporizhzhia.

In addition, Russia holds some territory in the adjoining regions of Kharkiv, Sumy, Dnipropetrovsk and Mykolaiv. Putin's comments signalled that Moscow would seek further gains on some of these fronts.