White House says a no fly zone would be a step toward sending US troops to fight a war with russia

White House press secretary Jen Psaki on Monday ruled out the idea of using US troops to create a no-fly zone over Ukraine amid the Russian invasion of the eastern European country.

She said it could lead to a war between the US and Russia. 

Psaki said a no-fly zone would require "implementation by US military — it would essentially mean US military would be shooting down planes, Russian planes."