Ukraine is planning possible countermeasures in the event that the Ukrainian aviator and Verkhovna Rada deputy Nadia Savchenko is convicted in Russia, says Ukrainian Foreign Minister Pavlo Klimkin.

"If there are next steps, then some reaction will follow: it is either a Savchenko List, by the example of the Magnitsky List, or these will be additional sanctions against individuals - these are issues for further debates, and such substantive discussions are ongoing now within the EU. And Russia is well aware of this," Klimkin said on Channel Five on Thursday evening.

Huge international pressure has been mounted to secure Savchenko's release, Klimkin said.

He said he considered it unrealistic that Savchenko could have been freed in exchange for setting up a transport corridor to Crimea from Russia via Ukrainian territory, of which advisor to the Ukrainian Security Service Yuriy Tandit said.

Tandit said several days ago that people close to the Russian president had proposed that Savchenko could be freed in exchange for opening a transport route from Rostov-on-Don to Crimea.

"As a matter of fact, such exchanges don't work in foreign policy, like a way to Crimea or something else. This doesn't work this way," Klimkin said in commenting on this.

Russian presidential press secretary Dmitry Peskov had denied earlier that Russian officials might have proposed freeing Savchenko in exchange for setting up a transport corridor to Crimea from Russia via Ukrainian territory.