President Zelenkskyy vows to defend Ukraine as fierce street fighting, missile strikes rock the country’s capital. Fighting has reached the streets of Ukraine’s capital as Russia presses ahead with its invasion. President Volodymyr Zelenkskyy claims Ukraine has derailed the advance of Moscow’s troops and pledges he will not surrender. Russia’s military says it has taken control of the southeastern city of Melitopol. Nearly 200 people have been killed so far, including civilians, three of whom were children, according to Ukraine’s health minister. More than 100,000 Ukrainians have fled the country since the beginning of Moscow’s assault, the UN says. Western countries have announced sweeping sanctions on Moscow, including measures targeting President Vladimir Putin himself.Dozens of residents have made their way to Mariupol’s hospital to donate blood, as Ukrainian forces are blocking the southeastern city’s main roads with trees to stave off Russian forces from entering.“Heavy fig...