Vladimir Putin is "cold-blooded" and "ready to destroy" if NATO violates Russia's borders, reports say.
Moscow has dramatically stepped up its rhetoric by warning military tension with NATO is “almost at boiling point”.
Pro-Kremlin TV channels accuse NATO of being “super-aggressive” in the Black Sea where warships have eyed each other at close distances.
While the warships face off in a stalemate, military aircraft soar above, playing cat and dog in the skies.
Putin is “confident and cold-blooded” and "ready to simply destroy” in the event of a “brazen violation” of its borders, one top state TV presenter claims.
The Kremlin sees its border lines tracing around the annexed Crimea, which runs along the northern coast of the Black Sea.
Putin has previously warned that unscheduled NATO drills in the Black Sea pose a serious challenge for Moscow.
US officials have alerted European allies about a possible attack, which would be the culmination of a long-running Kremlin feud with Ukraine.
Russian officials insisted their troops were only sent to the border in response to the increased NATO border activity.
The Black Sea tensions come amid a separate crisis on the hot spot on the Belarus-Poland border.
There, a rising number of migrants are trying desperately to force their way into the EU.
EU officials have accused Belarus of "weaponising migrants" and attempting to destabilise the bloc's eastern flank.
Pictures on Monday showed some migrants packing up after being told by Belarus that Germany buses were coming to collect them, despite no evidence that this was the case.
Current affairs TV host Dmitry Kiselyov - known as Putin’s “mouthpiece” and “propagandist-in-chief” - claims NATO aircraft and ships were "clearly trying to feel out the weak points in our defence".
The alliance was "acting more aggressively than ever" and demonstrating a "resolve to engage in some nastiness”, he said.
The show on Rossiya 1 also accused the West of “inciting” Ukraine to war with Russia.
It recalled that “Russian forces opened warning fire against the British destroyer HMS Defender” off the Crimean coast, foreshadowing what could happen in future.
NATO countries had a "moral duty to help the unfortunates" - a reference to migrants from countries like Iraq and Afghanistan, where the West had engaged in military interventions.
The West should allow in the migrants now on the border then “negotiate” with Belarus dictator Alexander Lukashenko concerning the future, he said.
Russia’s Channel 1 called warned of a “sea of aggression", while Itogi Nedeli highlighted UK chief of Defence Staff Gen Niock Carter warning of an accidental war.
Presenter Irada Zeynalova on Gazprom-owned NTV alleged the West was "exacerbating the situation” with the Black Sea “almost at boiling point both in the air and the sea”.
"It is already dangerous," she said.
She warned of a “very alarming” military situation with NATO countries Poland and Lithuania mobilising troops on their territories, while the alliance held unplanned drills in the Black Sea.
