White House Press Secretary Jen Psaki said Monday that the United States would not be assisting with any attempts to create a “no-fly zone” over Ukrainian airspace.

Ukrainian President Volodymyr Zelensky has called on President Joe Biden, urging him to consider helping to create a “no-fly zone” over Ukraine, saying, “If the West does this, Ukraine will defeat the aggressor with much less blood.”

Zelensky also noted that the sanctions imposed by the United States and other western nations were moving things in the right direction, but he said that more help was needed.