During his presidential campaign, Donald Trump often complained about how President Barack Obama drew red lines that he never enforced, and how a diminished America let Russia walk into Syria unchallenged, something he said would not happen if the Russian leader respected the United States president.
New York Times: Trump, Putin and a possible ‘red-line moment’ in Venezuela
US President Donald Trump arrives for a meeting with Senate Republicans on Capitol Hill March 26, 2019, in Washington, DC.