Russian forces kept up their bombardment of the port city of Mariupol on Thursday, while satellite photos showed that a massive Kremlin convoy that had been mired outside the Ukrainian capital split up and fanned out into towns and forests near Kyiv, with artillery pieces moved into firing positions.

International condemnation escalated over an airstrike in Mariupol a day earlier that killed three people at a maternity hospital. Western and Ukrainian officials called the attack a war crime. Ukrainian President Volodymyr Zelenskyy said the Russian refusal to permit evacuations from the port city amounted to “outright terror.”

Meanwhile, the highest-level talks held since the invasion began two weeks ago yielded no progress, the number of refugees fleeing the country topped 2.3 million, and Kyiv braced for an onslaught, its mayor boasting that the capital had become practically a fortress protected by armed civilians.