Ukrainian Forces Hold Kyiv as Talks With Russia Are Planned

KYIV, Ukraine—Russian and Ukrainian officials prepared to meet for the first talks since Moscow began its invasion four days ago, as Ukraine’s defenders held on to the capital, Kyiv, and pushed back Russian troops in urban combat in its second-largest city, Kharkiv.

In a sign of growing tensions with the West over Ukraine, Russian President Vladimir Putin ordered the country’s nuclear-deterrence forces to be put on alert.