The Defense Department on Thursday said Ukraine’s attack into a region of Russia this week is not escalatory and is consistent with U.S. policy. Pentagon deputy press secretary Sabrina Singh told reporters that Ukraine is “taking action to protect themselves” in the Kursk region, where Ukrainian troops entered Tuesday night and are continuing to fight, putting enormous pressure on Russia. The U.S. has a policy of allowing Ukraine to makes strikes in Russia with American-made weapons as long as it is related to a cross-border attack from Russian forces, and Singh said the Kursk attack, even though it involves troops...