2 1/2 years, the fighting in syria has stayed inside its own borders but increasingly we're seeing that violence beginning to cross over into turkey who, of course, backs the opposition. now, syria's military is accusing the northern neighbor of trying to escalate tensions between the two saying that the turkish military shot down a syrian helicopter yesterday n. a statement a short while ago, syria said a helicopter mistakenly crossed into turkish air space. turkey confirmed one of the jets did shoot down a syrian helicopter that was caught on tape by amateur video. photographers after it ignored repeated warnings to leave turkish air space and today, a car bomb then exploded near a check point inside turkey that rebels used to go in and out of syria. now, these types of cross border incidents are not new but they are growing more frequent. turkey has been one of the loudest voices trying to convince the obama