India, April 23 -- US President Donald Trump on Wednesday slammed Ukrainian counterpart Volodymyr Zelensky, once again, accusing him of prolonging the "killing field" by refusing to part with the strategic Crimean Peninsula, occupied by Russia since 2014.

Zelensky has consistently refused to cede the territory to Russia as part of a U.S.-brokered peace agreement. "There is nothing to talk about - it is our land, the land of the Ukrainian people," he said before the talks in London between U.S., European and Ukrainian officials.

"This statement is very harmful to the Peace Negotiations with Russia in that Crimea was lost years ago under the auspices of President Barack Hussein Obama, and is not even a point of discussion," Trump wrote on...