Ukraine Braces For Russian Aggression

The acting American ambassador made an appearance in Lviv's central square to condemn President Putin's actions.

In a message to the nation, Ukraine's president sought to project both calm and defiance. 

"We are on our land," President Volodymyr Zelenskyy said. "We are not afraid of anything or anyone.  We do not owe anything to anyone. We are confident of this."  

That determination was seen here in Lviv where emergency responders are training teenagers in safety and first aid. In the past week, 2,700 students have learned what to do if, for example, they come across a land mine.