After months of making the case for expanding its strike capabilities, Ukraine has received the green light from the Biden administration and is now free to fire American long-range weapons into Russian territory. President Volodymyr Zelensky says actions will speak louder than words as Russians accuse the US of throwing "oil on fire" of conflict. CNN’s Nick Paton Walsh tells Becky Anderson "the last 72 hours have been quite extraordinary in this war." #CNN #News