KYIV, Ukraine - The battle for Ukraine's strategic port of Mariupol raged on Monday, as Ukraine rejected a Russian offer to evacuate its troops from the besieged city and Russian bombardment continued.Ukrainian President Volodymyr Zelenskyy said about 400 civilians were taking shelter at an art school in the Azov Sea port city when it was struck by a Russian bomb.Russia's war in Ukraine, now in its 26th day, shows no signs of abating.
The invasion has wreaked devastation and destruction, exacting a heavy toll on civilians. The U.N. says more than 3.38 million people have fled Ukraine.Here are some key things to know about the conflict:The key port city has seen some of the heaviest fighting since the Russian invasion.
Russian and Ukrainian soldiers are fighting block-by-block for control of the city where at least 2,300 people have died, some buried in mass graves.Ukrainian officials rejected a Russian offer that its troops be granted safe passage out of the encircled city, which would hand Mariupol to Russia, allowing Russian forces in southern and eastern Ukraine to unite."There can be no talk of any surrender, laying down of arms," Ukrainian Deputy Prime Minister Irina Vereshchuk told the news outlet Ukrainian Pravda.MARIUPOL, UKRAINE - MARCH 20: Civilians trapped in Mariupol city under Russian attacks, are evacuated in groups under the control of pro-Russian separatists, through other cities, in Mariupol, Ukraine on March 20, 2022. (Photo by Stringer/Anadolu Age It was not clear how many casualties there were in the Russian bombing of the art school, Zelenskyy said in a video address early Monday.