The United Nations estimates that more than 10 million people may end up fleeing their homes in Ukraine, including four million who may cross the border into neighboring countries, according to the UN statement.

"Our colleagues tell us that the needs in Ukraine are growing and spreading by the hour.  They warn that while the scale and scope of displacement is not yet clear, we expect that more than 10 million people may flee their homes if violence continues, including 4 million people who may cross borders to neighboring countries," UN Secretary General spokesperson Stephane Dujarric said in a statement on March 3.

Some essential UN staff has been relocated outside Kiev, Ukraine, so they may continue delivering humanitarian assistance “with minimum disruption” and also to “reduce risk,” according to the statement, but Dujarric said some staff does remain in the capital of Kiev.

“Our humanitarian colleagues stress that to scale up our operations, we need safe, unimpeded access to all conflict-affected areas,” Dujarric said.