China—Newly Acquired S-400 Air Defense Systems Successfully Conclude Trials

The Chinese military has finished testing its new S-400 air defense systems procured from Russia, reports Russia's Tass news agency.  The second and final test-firing of the system occurred in late December, a diplomatic source said on Thursday.  During the test, the system launched a long-range 48N6E missile and hit a target at a range of 155 miles (250 km).  Another trial was held earlier in the month against a simulated ballistic target.  China is the first international...