Ukraine-Russia crisis: What to know about the fears of war

In this handout photo released by Russian Foreign Ministry Press Service, Russian Foreign Minister Sergey Lavrov, right, and British Foreign Secretary Liz Truss attend a joint news conference following their talks in Moscow, Russia, Thursday, Feb. 10, 2022. Britain's top diplomat has arrived in Moscow to try to defuse tensions raised by Russia's military buildup near Ukraine. (Russian Foreign Ministry Press Service via AP)

Ukraine-Russia crisis: What to know about the fears of war