Putin's message came amid a major Russian military buildup near Ukraine, where cease-fire violations in the seven-year conflict between Russia-backed separatists and Ukrainian forces have escalated in recent weeks.
I hope that no one dares to cross the red line in respect to Russia, and we will determine where it is in each specific case,” Putin said.
However, the Russian government has cautioned Ukrainian authorities against using force to regain control of the rebel-held east, claiming that Russia might be forced to intervene to protect civilians in the region.
“We really don’t want to burn the bridges,” Putin said.
“But if some mistake our good intentions for indifference or weakness and intend to burn or even blow up those bridges themselves, Russia’s response will be asymmetrical, quick and tough.”
He also mentioned that work on the nuclear-armed Poseidon underwater drone and the nuclear-powered cruise missile Burevestnik is progressing well.