Russia pounded Ukraine’s energy facilities Tuesday with its biggest barrage of missiles yet, striking targets across the country and causing widespread blackouts, and a U.S. official said missiles crossed into NATO member Poland, where two people were killed. A defiant Ukrainian President Volodymr Zelenskyy shook his fist and declared: “We will survive everything.” Polish government spokesman Piotr Mueller did not immediately confirm the information from a senior U.S. intelligence official, who spoke on condition of anonymity because of the sensitive nature of the situation. But Mueller said top leaders were holding an emergency meeting due to a “crisis situation.” Polish...