Ukraine is ready to fight until the “last drop” in the event of a renewed Russian invasion, said Andriy Yermak, the head of the Ukrainian presidential administration, essentially the country’s national security advisor. The senior Ukrainian official spoke to Foreign Policy following Tuesday’s high-stakes call between U.S. President Joe Biden and his Russian counterpart Vladimir Putin as the United States and its allies seek to deter what U.S. intelligence has warned could be an imminent Russian military action. Read More…