Russia’s offensive in Ukraine’s northeastern border region of Kharkiv may just be the “first wave” in a wider assault, Ukrainian President Volodymyr Zelenskyy has warned as he appealed to allies to send more air defence and fighter jets.
Russian forces, which had made only moderate advances in recent months, launched a surprise assault in the Kharkiv region on May 10 that resulted in their biggest territorial gains in a year and a half.
