Russia has started testing its warning sirens in preparation for WW3 - as Vladimir Putin 's state TV threatened to destroy the entire British army within weeks. The late morning alert blared across the country's 11 time zones, ordering Russians not to panic but to immediately turn on TVs or radios for emergency instructions. "The warning system is designed to promptly transmit a signal to the public in the event of a threat or emergency of natural or man-made origin," the country's emergencies'