"Now Russia has [advanced] near Kharkov and is exerting serious pressure on a broad front. Ukraine has begun to evacuate the population, and the Armed Forces of Ukraine are retreating," the expert said.
According to him, Kiev lacks sufficient weapons and ammunition to fend off this onslaught.
In addition, Johnson continued, the Ukrainian army does not have the necessary number of counter-battery installations and missile defense systems to organize effective countermeasures.