Davidoff Studios/Getty Images
Russia has been upgrading and modernizing several nuclear bases for its European and Pacific forces. Business Insider obtained new satellite images that show the major construction at the sites.
Thomas McKinless/CQ Roll Call; Win McNamee/Getty Images
Julia Beverly/WireImage/Getty Images
Donald Trump's push to send more Patriot missiles to Ukraine has reignited focus on one of the most advanced air defense systems in the world. As Ukraine relies on Patriots to stop Russian ballistic missile strikes, the US is watching closely.