tom ackermann, al jazeera washington. >> the family of the suspected gunman who killed five u.s. servicemen are deeply upset by what he did. they say he was suffering from depression. the f.b.i. is reviewing a text message mohammad youssuf abdulazeez sent to a friend, which linked a reaming verse declaring war. the 24-year-old was born in kuwait. he was killed by police in tennessee on thursday. >> the republican party's fight for the white house has turned nasty. presidential hopeful donald trump said senator john mccain is not a war hero. some say the business tycoon's latest comments have gone too far. gerald tan has the story. >> donald trump is not known for holding back his opinions. now the u.s. presidential hopeful has mocked fellow republican senator john mccain. >> he easy not a war hero. >> he's a war hero, five and a half years -- >> he's a war hero because he was captured. i like people who weren't captured. >> do you hear that? he's a war hero because he was captured. >> trump was attacking mccain because he lost the 2008 election to current president barack obama.

tom ackermann there on the unconfirmed reports of a shooter at the u.s. navy yard in washington d.c. >> still to come, a court in afghanistan reduces the sentences of four men convicted over the mob killing of a woman. >> a gay couple in china risks arrest as they push for the recognition of same sex unions. >> in japan back in the women's world cup final after a slice of luck against england. details later in sport. >> the word food program warns that badly needed aid is not getting through to southern yemen because of the dangerous security situation in aden. the u.n. raised a level of emergency to the highest levels. 21 million people need help, most of them are children. we have this report. >> this young girl is inconsolable. shocked by what's happened to the homes in her neighborhood, houses that hours ago were still standing. >> why did they do this, she asks through her tears. in yemen devastation has become the norm. >> the situation in yemen is very critical especially for children who are the most vulnerable groups. >> a collective trauma, phys

tom ackermann, al jazeera washington. >> be sure to tune in tonight for an ali velshi special report iran behind the deal. >> a busy weekend for u.s. led coalition forces in the fight against isil. there were 16 military airstrikes in syria and iraq. fighter jets his six isil targets in syria and 10 in iraq. among the targets isil tactical units, tanks weapons facilities and tunnels. no word on how many peep were killed. isil is claiming responsibility for four explosions in gaza city today. the attacks targeted six vehicles owned by hamas. hamas has crackdown on isil supporters in gaza. we have a report from gaza. >> this car belonged to a hamas fighter. the bomb was placed under the fuel tank. >> there was a huge explosion that shook the neighborhood. first we thought it was israel attacking us. then we realized it's inside gaza. that's scary. we should protect each other. >> hamas leaders were quick to say all is under control and a number of arrests have been made but no specific group is being named. it's not the first time hamas has been targeted from within. attacks over the p