President Joe Biden and Ukrainian leader Volodymyr Zelenskyy signed a 10-year security agreement Thursday that they hailed as a milestone in relations between their countries, but that alone was not enough to stop Zelenskyy from wondering how much longer he could count on America's support.
Zelenskyy also said his country “urgently” needed additional air defense systems to protect Ukrainians and the nation's infrastructure from Russia's continued bombardment.
