Your Monday Briefing: Shelling in Ukraine intensifies

Mortar attacks continued through the weekend in eastern Ukraine.Credit...Tyler Hicks/The New York TimesRussia’s imminent invasion?

U.S. intelligence learned last week that the Kremlin had ordered an invasion of Ukraine to proceed, prompting a dire warning by President Biden that President Vladimir Putin had made the decision to attack.

The new intelligence reveals that 40 to 50 percent of the Russian forces surrounding Ukraine have moved out of staging and into combat formation.

Russian artillery fire escalated sharply in eastern Ukraine this weekend, deepening fears of an imminent attack and potentially giving Russia a pretext to invade. Ukrainians reluctantly left their homes, some…