Russia takes aim at urban areas; Biden vows Putin will ‘pay’

  • A man walks past the remains of Russian military vehicles in Bucha, close to the capital Kyiv, Ukraine, Tuesday, March 1, 2022. Russia on Tuesday stepped up shelling of Kharkiv, Ukraine's second-largest city, pounding civilian targets there. Casualties mounted and reports emerged that more than 70 Ukrainian soldiers were killed after Russian artillery recently hit a military base in Okhtyrka, a city between Kharkiv and Kyiv, the capital. (AP Photo/Serhii Nuzhnenko)

  • EDS NOTE: GRAPHIC CONTENT - A man looks at a Russian soldier's body lying next to a military vehicle on a road in the town of Bucha close to Kyiv, Ukraine, Tuesday, 2022. Russia on Tuesday stepped up shelling of Kharkiv, Ukraine's second-largest city, pounding civilian targets there. Casualties mounted and reports emerged that more than 70 Ukrainian soldiers were killed after Russian artillery recently hit a military base in Okhtyrka, a city between Kharkiv and Kyiv, the capital. (AP Photo/Serhii Nuzhnenko)

  • Medical workers operate on people injured by shelling in a residential area at a maternity hospital converted into a medical ward in Mariupol, Ukraine, Tuesday, March 1, 2022. Russian strikes on the key southern port city of Mariupol seriously wounded several people. (AP Photo/Evgeniy Maloletka)

  • Medical workers move a patient in a basement of a maternity hospital converted into a medical ward and used as a bomb shelter in Mariupol, Ukraine, Tuesday. Russian strikes on the key southern port city of Mariupol seriously wounded several people. (AP Photo/Evgeniy Maloletka)

  • Police detain demonstrators during an action against Russia's attack on Ukraine in St. Petersburg, Russia, Tuesday, March. 1, 2022. Protests against the Russian invasion of Ukraine resumed on Tuesday, with people taking to the streets of Moscow and St. Petersburg and other Russian towns despite mass arrests. (AP Photo/Dmitri Lovetsky)

  • Ukrainian servicemen ride on top of an armored personnel carrier speeding down a deserted boulevard during an air raid alarm, in Kyiv, Ukraine, Tuesday, March 1, 2022. The U.N.'s refugees chief is warning that many more vulnerable people will begin fleeing their homes in Ukraine if Russia's military offensive continues and further urban areas are hit. (AP Photo/Vadim Ghirda)

  • A member of the Ukrainian Emergency Service looks at the City Hall building in the central square following shelling in Kharkiv, Ukraine, Tuesday, March 1, 2022. Russian strikes pounded the central square in Ukraine’s second-largest city and other civilian sites Tuesday in what the country’s president condemned as blatant campaign of terror by Moscow. (AP Photo/Pavel Dorogoy)

  • People look at the gutted remains of Russian military vehicles on a road in the town of Bucha, close to the capital Kyiv, Ukraine, Tuesday, March 1, 2022. Russia on Tuesday stepped up shelling of Kharkiv, Ukraine's second-largest city, pounding civilian targets there. Casualties mounted and reports emerged that more than 70 Ukrainian soldiers were killed after Russian artillery recently hit a military base in Okhtyrka, a city between Kharkiv and Kyiv, the capital. (AP Photo/Serhii Nuzhnenko)

KYIV, Ukraine — Ukraine’s leader decried Russia’s escalation of attacks on crowded urban areas as a blatant campaign of terror, while U.S. President Joe Biden warned that if his Russian counterpart weren’t made to “pay a price” for the invasion, the aggression wouldn’t stop with one country.