- Ukraine's president abruptly canceled foreign trips in the face of critical threats to his country.
- Russia's new assault on the Kharkiv region has put further strains on Ukraine's defenses.
- The situation could become desperate — at least until Western aid arrives.
Ukrainian President Volodymyr Zelenskyy has postponed all of his upcoming international trips, in a further sign that Ukraine is at a critical moment of jeopardy in the war with Russia.