I STANBUL—President Trump’s ultimatum for Russian President Vladimir Putin is showing no signs of bringing Russia and Ukraine any closer to peace. The third round of direct talks between Ukrainian and Russian officials, held Wednesday in Istanbul, yielded few results. The two sides met for less than an hour.

Russian and Ukrainian delegates have begun their third set of direct talks in Istanbul, days after US President Donald Trump gave Moscow a 50-day deadline to make peace or face “very severe tariffs.” Russian President Vladimir Putin has not publicly acknowledged Trump’s ultimatum,

Ukraine, Russia hold third round of peace talks in Istanbul * Ukrainian drones reportedly target key logistics hub in southwestern Russia * Russia suffered 80,000 casualties during Kursk incursion, Ukraine's military chief says * 'He sees Trump as emotional and susceptible to influence' — Putin not worried about 50-day ceasefire deadline,