Ukrainian President Volodymyr Zelensky on Monday criticized some Western countries for transferring their diplomatic staff from the capital Kyiv amid fears of a "Russian invasion" of Ukraine.

A number of countries, including the United States, have pulled out their diplomats and appealed to their citizens to leave Ukraine.

While some nations like Australia and Canada have opened international missions in Lviv, a city in Western Ukraine, others like the U.S., Germany and the Netherlands said they will maintain a reduced consular presence in the capital.

The move has left Ukrainian authorities disappointed as they feel Western countries are overreacting and handing a greater advantage to Russia.

"It is a big mistake that some embassies, well, this is their decision, are moving to western Ukraine," Zelensky said.

"Because there is no western Ukraine, there is Ukraine, it is whole. So if, God forbid, something happens it will be everywhere," he added. 

(With input from agencies)