Russia, Ukraine meet as fighting rages, sanctions hit Putin and Kyiv holds firm

Russian and Ukrainian officials sat down for talks on Monday even as fighting raged around key cities. Meanwhile, Russian President Vladimir Putin confronted the fallout from an invasion that has rallied the West behind his neighbor and against Moscow.

Ukraine said that it would push for an immediate cease-fire and the withdrawal of Russian troops from the country ahead of the talks at the Belarusian border.

Kyiv’s position has been bolstered by its staunch early resistance, military assistance from countries across the world and a growing global sanctions effort that has sent Moscow’s economy reeling.

Latest updates on Ukraine:

• Ukrainian and Russian officials sat down for talks on the Belarus border. France’s Macron held separate phone calls with Putin and Zelenskyy.
• “Staunch resistance” is hampering Russian advance, Britain said.
• The U.S. expanded sanctions on Russia’s central bank as Moscow’s economy reeled. Switzerland, breaking its traditional neutral status, announced sanctions, too.
• Russia’s military reported its nuclear deterrent forces have been put on high alert following Putin’s order.
• More than half a million people have now fled Ukraine since the conflict began, the United Nations said.

But even as officials negotiated at the border, Ukraine said its second-largest city was coming under attack from heavy Russian shelling.

The conflict was now also being fought in the shadow of nuclear threats, with the Russian military saying Monday that its nuclear deterrent forces had been put on high alert after Putin’s order.

While growing numbers of people have fled the Russian advance, those who stayed were enduring an air assault that Kyiv and international watchdogs said was increasingly hitting civilians.

Russian forces were accused of carrying out massive shelling in Ukraine’s second-largest city, Kharkiv, with graphic video shared on social media Monday appearing to show the assault and its aftermath. In one video, bodies can be seen on the ground in pools of blood.

Ukrainian interior ministry adviser Anton Gerashchenko shared video appearing to show flashes in the sky as smoke filled the air, and said that dozens had been killed and hundreds wounded.

“This horror must be seen by the whole world,” he said. 

NBC News has verified the video is authentic, but it has not confirmed reports of any casualties from the incident. Russia has repeatedly denied targeting civilians.

United Nations human rights chief Michelle Bachelet said Monday that 102 civilians, including seven children, were killed across Ukraine since Thursday. But those figures probably undercounted the full extent of the national death toll, she added.

The head of the U.N. refugee agency, meanwhile, said that more than a half a million people had fled the country of 44 million in the wake of the Russian attack.

Others have sought shelter inside metro stations and parking garages while missile strikes and gunfire hit cities.

As Russian troops bore down on the capital, a strict 39-hour curfew that kept people off Kyiv’s streets all weekend ended early Monday.

Residents stepped out Monday to replenish supplies and waited in line at supermarkets between…