Russia-Ukraine: What To Know As Russia Attacks Ukraine

WARSAW, Poland — Russian troops have launched a broad assault on Ukraine from three sides.

The attack began before dawn with explosions in the capital Kyiv and other cities.

Ukraine’s leadership said at least 40 people have been killed so far in what it called a “full-scale war” targeting the country from the east, north and south.

In a televised address as the attack began, the Russian president warned other countries that any attempt to interfere would “lead to consequences you have never seen in history.”

Ukrainians started fleeing some cities, and the Russian military claimed to have incapacitated all of Ukraine’s air defenses and air bases within hours.