The U.S. special envoy for Ukraine’s economic recovery said Monday that tapping frozen Russian assets would be an “easy” source of money for Kyiv, but G7 countries must first agree collectively to do it. Penny Pritzker spoke on the sidelines of the first day of the annual meeting of global elites in Davos, Switzerland, where the war in Ukraine figures highly on the agenda. Ukraine has pushed for the West to seize $300 billion in frozen Russian assets to pay for its reconstruction. Ukrainian President Volodymyr Zelensky, who will address the World Economic Forum on Tuesday, said after talks wit…