<Tr> <Td> 1970--73 Chile </Td> </Tr> <Tr> <Td> 1979--89 Afghanistan, Operation Cyclone </Td> </Tr> <Tr> <Td> 1980--92 Angola, UNITA </Td> </Tr> <Tr> <Td> 1981--87 Nicaragua, Contras </Td> </Tr>

Who are involved in the syrian civil war