>> NBC'S SARAH JAMES, THANK YOU SO MUCH FOR BEING THERE FOR US. MEANWHILE, TENSIONS WITH VENEZUELA CONTINUE TO ESCALATE, WITH PRESIDENT TRUMP NOW SAYING HE IS ORDERING A BLOCKADE OF SANCTIONED OIL TANKERS BOTH LEAVING AND ENTERING VENEZUELA. WE'RE GOING TO BREAK THAT DOWN IN JUST A SECOND.BUT FIRST, NEW VIDEO FROM THE DEPARTMENT OF DEFENSE. JUST THIS WEEK, THE U.S. STRUCK THREE MORE BOATS IN THE EASTERN PACIFIC, KILLING EIGHT PEOPLE. THAT BRINGS THE TOTAL NUMBER OF DEATHS FROM THESE STRIKES ALL THE WAY TO A ...