More than half the Arctic's coastline is Russian territory and in the last six years Moscow has built more than 475 military bases along its northern border.

Dangerously cold temperatures were descending into the U.S. as far south as Texas on Tuesday, breaking records in some areas.

“The first Arctic high pressure area will sink southward across the Plains and impact Texas early next week. This airmass will continue to follow the storm along the Gulf Coast, Tennessee Valley ...

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