Turkey crossed red line when it started testing S-400 radars — US senator
WASHINGTON, November 26. /TASS/: Turkey has crossed ‘another red line’ by starting tests of the radar detection system it purchased from Russia as part of the S-400 missile defense system, US Senator for Maryland Christopher Van Hollen said.
"Two weeks after his WH [White House] visit, [Turkish President Recep Tayyip] Erdogan is thumbing his nose at Trump, the U.S. + NATO, and crossing another red line on S-400s," Van Hollen said in a Twitter post, attaching an article on the issue.