Washington, Aug. 20 -- US White House Press Secretary Karoline Leavitt on Tuesday (local time) said that US President Donald Trump ruled out sending US troops to Ukraine as part of security guarantees.

Leavitt, during her press briefing, said that other options, however, remain open, including the skies.

"The president has definitively stated US boots will not be on the ground in Ukraine, but we can certainly help in the coordination and perhaps provide other means of security guarantees to our European allies. The president understands that security guarantees are crucial to ensuring a lasting peace. He has directed his national security team to coordinate with our friends in Europe and also to continue to cooperate and discuss these m...