President Vladimir Putin said Friday that Russia will continue to test and start mass-producing the hypersonic ballistic missile that it fired at Ukraine Thursday.

Tensions in Ukraine spike after Russia fires a new hypersonic missile at the Ukrainian city of Dnipro. With less than two months before President-elect Donald Trump takes office, the fate of vital U.S.

It comes after Russian foreign ministry says a United States anti-missile base in Poland is now ‘a priority target’