Number of Ukraine refugees passes worst-case U.N. estimate

The U.N. refugee agency says more than 4 million refugees have fled Ukraine since Russian troops invaded the country

MEDYKA, Poland -- The number of people who have fled Ukraine since Russian troops invaded has surpassed 4 million, the United Nations reported Wednesday as shelling continued in places where Moscow had vowed to ease its military operations.

"I do not know if we can still believe the Russians,” refugee Nikolay Nazarov, 23, said as he crossed Ukraine's border into Poland with his wheelchair-bound father.

Despite Russia's announcement during talks on Tuesday that its forces would ease their assault near Ukraine's capital, Kyiv, and elsewhere, Nazarov said he expects “more escalation” in the country's east, including the city he and his father fled.

“That is why we cannot go back to Kharkiv," he said. “We are afraid of a new phase of war in eastern Ukraine.”