NATO Secretary General Jens Stoltenberg told The Telegraph that the military leadership is working on plans for a permanent presence of troops on the alliance's eastern border in response to Russia's invasion of Ukraine.

According to Stoltenberg, NATO is planning a reset that will change the role of troops in the Eastern European member countries of the alliance and they will become not just a deterrent in the event of a Russian attack, but a full-fledged deterrent.

Decisions on this issue are expected at the NATO summit in June, he said.

US Joint Chiefs Chairman Mark Milley told a congressional hearing Tuesday that he could consider setting up permanent NATO bases in countries such as Poland, Romania and the Baltic republics to accommodate a rotating troop presence.

US Secretary of Defense Lloyd Austin said this week that there is no decision yet on a permanent front-line or additional rotating force inside and outside, or a combination of both.