"Certainly, everyone is concerned that the Kremlin is making this war in Ukraine increasingly open. They used to hide all their steps, all their aggression. Now it's increasingly clear what Moscow is doing. So, conceivably, Moscow can decide to use its Air Force," he stated, adding that if it does that even the most skeptical Europeans who doubted the hand of the Kremlin in the conflict will see that Russia is conducting war.
"Our report (on the situation in Ukraine to President Obama - ed.) did not specifically recommend anti-aircraft weapons … but we talked about it," Herbst said. He added that the reason for that is a possible major escalation of the conflict. The former ambassador stated that if Putin were to use his Air Force, the United States' reaction would be swift.