unite nations south sudan president salva kiir order humanitarian aid convoy allow move freely unhindered unimpeded around country two weeks unite state say lose trust government threaten pull support nov. order see reuters direct roadblocks remove level government must assist aid group anyone obstruct aid impose tax aid convoy shall hold accountable move come two weeks u.s. ambassador unite nations nikki haley meet kiir juba first member president donald trump cabinet visit south sudan spiral civil war late 2013 two years gain independence sudan haley say washington lose trust kiir government fuel civil war demand kiir allow full consistent humanitarian aid access good sign must see action word president kiir haley say statement tuesday refer nov. presidential order true test whether humanitarian assistance actually allow get south sudanese people consistent way watch continue encourage president kiir right thing say haley office say kiir yet deliver commitments make 45-minute one-on-one meet haley juba war south sudan spark feud kiir former deputy riek machar plunge part world young nation famine million people flee home third country population u.n. humanitarian coordinator south sudan alain noudehou welcome kiir nov. order hope order positive impact reduce many constraints face humanitarian partner delay prevent provision urgently need help noudehou say statement monday first time kiir pledge improve humanitarian aid situation u.n. security council ambassadors visit september 2016 kiir agree eliminate illegal checkpoints streamline bureaucratic process access people need follow month set high-level humanitarian oversight committee improve cooperation aid group yet u.n. sanction monitor report u.n. security council see reuters last week accuse kiir government use food weapon war target civilians block life-saving aid areas find arm force group militias particularly affiliate kiir vice president taban deng gai continue actively impede humanitarian peacekeeping operations nov. order kiir direct high-level humanitarian oversight committee ensure aid convoy group move freely state-level oversight committees create u.s. visit south sudan 's kiir order unhindered aid access