“I would say that a lot has happened over the past ten months that enhances Ukraine’s ability to be interoperable with NATO: the equipment they receive, the training they receive, the systems they use,” TASS quoted her as saying.

Dunnigan noted that Washington "remains committed to NATO's open door policy."

Earlier, NATO Secretary General Jens Stoltenberg said that the North Atlantic Alliance recognizes the desire of the Ukrainian authorities to join the country to NATO, but the military support of the Armed Forces of Ukraine should now be the main priority.

Bloomberg, citing sources familiar with the situation, reported: NATO believes that the time for Ukraine's membership in the alliance has not yet come.