NATO members tighten security as G7 leaders discuss Russia's assault on Ukraine

U.S.-led NATO said on Tuesday its member states were boosting security around key installations as Russia escalated its attacks on Ukraine and stepped up threats against the West.

Russian missiles pounded Ukraine for a second day, after dozens of air raids across the country on Monday that killed 19 people, wounded more than 100 and knocked out power supplies.

Moscow has annexed new tracts of Ukraine, mobilised hundreds of thousands of Russians to fight and repeatedly threatened to use nuclear arms in recent weeks, spreading alarm in the West. A...