. "countries in the region and beyond involved" . . . . . . "shot down by Syrian government forces" . "foreign involvement" . . "involved themselves" . "outside powers" . . . "Foreign_involvement_in_the_Syrian_civil_war" . "directly involved themselves in the conflict" . "Foreign involvement in the Syrian civil war" . . "U.S. involvement in the Syrian civil war" . "illegal presence in Syria" . . . . "Foreign involvement in the Syrian civil war" . "travelled to Syria" . "foreign intervention in Syria" . "Foreign involvement in the Syrian Civil War" . . "most military interventions in Syria" . . . "many countries have intervened" . . "Foreign Involvement" .