ISTANBUL   Ukrainian President Volodymyr Zelenskyy claimed “good results” from his country’s forces in the border area of the Sumy region, where Ukrainian and Russian troops have been engaged in intense clashes in recent months. In an evening video address shared on US social media company X late Sunday, Zelenskyy said he listened to a report over the past day by Commander-in-Chief Oleksandr Syrskyi and that Ukrainian forces are continuing to advance toward Ukraine’s border with Russia in the