By Marc Jones

LONDON (Reuters) -Investors are tempering expectations that Friday’s summit between Donald Trump and Vladimir Putin will deliver a significant breakthrough on the war in Ukraine despite some hopeful signs.

Ukraine’s government bonds – key indicators of the mood – rallied when news of the summit emerged this month but have largely stalled at a still-distressed 55 cents on the dollar amid the pre-meeting posturing.

Trump himself said it will be more of a “listening exercise” although he hopes it will go well enough for another involving Ukraine’s President Volodymyr Zelenskiy soon afterwards – and threatened “severe consequences” if it doesn’t.

Europe’s leaders meanwhile have been encouraged by Trump’s signals on participating in security guarantees, while Putin has praised

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