amman state security court jordan monday sentence one syrian militant death hand life sentence three others role suicide bomb attack jordanian military border post kill seven guard last year military judge colonel mohammad al-afif say men early twenties involve help islamic state militant group stage suicide bomb shake kingdom june last year afif say four provide photos intelligence jordanian military post islamic state leader former de facto capital militants raqqa syria islamic state leader send suicide bomber military outpost locate hundred meter away rukban camp no-man land thousands syrian refugees strand near frontiers iraq syria jordan meet court find four residents camp guilty abet terrorist act lead death human be charge commit terrorist act use automatic weapons fifth defendant acquit plead guilty trial begin last march officials say time suicide bomber drive explosive lade car full speed behind berm evade troop reach jordanian post detonate car blast islamic state claim responsibility days late also leave 15 soldier wound officials say area late declare close military zone incident disrupt aid tens thousands syrian refugees jordan keep tight control frontier syria since outbreak war neighbor partner u.s.-led coalition fight militants syria iraq target attack tens thousands syrian refugees flee violence russian air strike eastern homs desert seek shelter rukban remote desert camp king abdullah say militants among jordan refuse allow enter security ground jordan sentence syrian militant death border attack