I don't think most people realize just how close U.S. forces are to engaging in direct combat with Russia. Very close. And if you want to know how we got in this predicament in Syria, you might want to ask Hillary Clinton.
Over the weekend, Russian cruise missiles pounded rebel forces backed by the U.S., which is allied with them in their attempts to remove President Bashar Assad from power. The Russians became so aggressive that U.S. commanders found it necessary to publicly announced U.S. forces would take action to protect themselves if it came to that.