 Mamwe mativi ehondo yeSyria akafumurwa nekunyorwa naHiggins anosanganisira kushandiswa kwemabhomba e cluster muna 2012, ayo hurumende yeSyria yakaramba kushandisa; kupararira kwemapfuti anotsvaga kupisa anozivikanwa seMANPADS; uye kupararira kwezvombo zvakagadzirwa neCroatia izvo zvinonzi zvakabatana neUnited States, nyaya yakazotorwa ne The New York Times. Akatsvakurudzawo kushandiswa kunonzi kwehurumende yeSyria zvombo zvemakemikari, kusanganisira kurwisa kwemakemikari kweGhouta.zvakadzama. Higgins akaitawo basa rechibvumirano reHuman Rights Watch uye Action on Armed Violence. Basa raHiggins pamusoro pokuti ndiani akanga ane mhaka yekurwiswa kwegasi re sarin muhondo yevagari vemuSyria yakashoropodzwa mutsamba ku London Review of Books naTheodore Postol weMassachusetts Institute of Technology uye aimbova muongorori wezvombo zveUN, Richard Lloyd. 