<p>Russia says the effort to end its war with Ukraine is a drawn-out process after Presdent Donald Trump expressed frustration with both nations' leaders.</p><p>Kremlin spokesman Dmitry Peskov says the work is ongoing.</p><p>He did not directly address President Donald Trump's remarks yesterday blasting Putin for questioning Ukraine leader Volodymyr Zelenskyy's credibility.</p><p>Zelenskyy says there's no letup in Russian attacks, showing Putin couldn't care less about diplomacy.</p><p>European Union foreign policy chief Kaja Kallas says Ukraine's allies must find a way to boost pressure on Moscow.</p><p>Sagar Meghani, Washington.</p><p>  </p>
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