European countries are working with Ukraine's President Volodymyr Zelenskyy on proposed "security guarantees" to protect any future peace deal, measures that Donald Trump has suggested he will support after the historic White House meeting earlier this week.

There is a "wide spectrum" of what this could mean in practice, said the BBC , and a "big question mark" remains over what guarantees Russia will be willing to accept.

What did the commentators say?

The "inherent contradiction" of any security guarantees is that they must be "robust enough" to deter Russia from a future attack, but "not so robust" that Russia refuses to accept them and "threatens to target Western assets" in Ukraine , said the BBC. "Nobody wants to start World War Three ."

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