WASHINGTON — When the White House began negotiating with Ukraine to provide it for the first time with some of America’s most powerful, precision-guided weapons, President Biden insisted that President Volodymyr Zelensky agree to one major restriction: No firing into Russian territory, no matter how great the provocation.
“Ukrainians have given us assurance that they will not use these systems against targets on Russian territory,” Secretary of State Antony J. Blinken told reporters…