The World Factbook - The World Factbook (cia.gov) 

"The World Factbook provides basic intelligence on the history, people, government, economy, energy, geography, environment, communications, transportation, military, terrorism, and transnational issues for 266 world entities."

How often is this information updated? 

The information is updated on a weekly schedule.

Here is a map of Ukraine from The World Fact Book:

Here is a link to The World Factbook's information on Ukraine