"Simultaneously with the implementation of the Minsk agreements, Ukraine is strengthening its positions, building up its defense capability," Poroshenko said at a meeting of Ukraine's National Security and Defense Council.
Poroshenko also announced the resumption of regular training of Ukrainian armed forces and participation of NATO instructors in this process.
"We have resumed the training of the Ukrainian military, including with participation of our partners from several NATO countries," he said addressing the council.
In late February, UK Prime Minister David Cameron also said that Britain would send military instructors to Ukraine to train local forces throughout March, as well as develop an infantry training program with Kiev.
On top of that, Washington said it was preparing to send 300 troops to train Ukrainian soldiers in western Ukraine. The Russian Foreign Ministry claimed last week that US servicemen were already at the Ukrainian base.
Ukraine has been building up its military muscle using funds and non-lethal aid from the United States, although it has so far been denied any arms deliveries for fear that more guns in the conflict zone will escalate tensions.