<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.wapiganaji wa kundi la islamic state is wamesambaza picha za video zinazodaiwa kuonyesha mauaji ya wanajeshi wane wa marekani waliouawa nchini niger mwezi octoba mwaka mwaka jana.  <response>: a propaganda video released by the islamic state terrorist group shows part of what happened in the attack that killed four american soldiers in niger last year. 