President Donald Trump said Monday that the United States is learning "much" from a deadly blast during a Russian missile test that caused elevated radiation levels. "The United States is learning much from the failed missile explosion in Russia. We have similar, though more advanced, technology," Trump wrote on Twitter.
"The Russian 'Skyfall' explosion has people worried about the air around the facility, and far beyond. Not good!" the president tweeted. Experts have linked the blast - which killed at least five people - to the 9M730 Burevestnik nuclear-powered cruise missile, known by Nato as SSC-X-9 Skyfall and touted by President Vladimir Putin earlier this year.