washington u.s. state department bluntly question tuesday motives saudi arabia unite arab emirates boycott doha say mystify gulf state release grievances qatar washington strong language yet gulf dispute state department say time go doubt raise action take saudi arabia uae point leave one simple question action really concern regard qatar allege support terrorism long-simmering grievances among gcc countries state department spokeswoman heather nauert say refer six-nation gulf cooperation council state department comment come contrast language take u.s. president donald trump accuse qatar high level sponsor terrorism saudi arabia unite arab emirates qatar key american ally fact state department bluntly question riyadh abu dhabi action public suggest washington keen party end dispute say party involve let finish let get go nauert say qatar host vital u.s. military base al udeid 11,000 u.s. coalition force deploy assign 100 aircraft operate unite arab emirates along saudi arabia egypt bahrain impose measure isolate qatar say sanction could last years unless doha accept demand arab power plan reveal come days state department head secretary state rex tillerson encourage side de-escalate tensions engage constructive dialogue nauert say u.s. official say washington urge qatar take step defuse crisis include sign proposals draw treasury department strengthen control finance militant group official second u.s. official say inaccurate single qatar saudis emiratis gulf state face similar challenge counter terrorist finance qatar foreign minister expect travel washington next week say doha would negotiate neighbor resolve gulf dispute unless first lift trade travel boycott impose two weeks ago add doha still believe solution possible two weeks since embargo start mystify gulf state release public qataris detail claim make toward qatar nauert add immediate comment riyadh abu dhabi qatar ambassador unite state meshal hamad al-thani welcome state department statement tweet confident ability u.s. resolve crisis qatar deny accusations neighbor fund terrorism foment regional instability cosied enemy iran first u.s. official say dispute drive economic rivalries historical tensions personal dynamics gulf leaders specific demand saudis emiratis make qatar dispute open rift among main u.s. ally middle east since dispute erupt trump take tough stance qatar state department seek remain neutral nauert say tillerson three phone call two in-person meet saudi foreign minister tillerson also speak phone three time qatar foreign minister qatari emir uae ambassador unite state say last week list demand qatar compile would soon hand unite state say would broadly address support terrorism meddle internal affairs countries attack qatari-owned media platforms pentagon say boycott hind u.s. ability plan long-term operations region al udeid command anti-islamic state air campaign take place meanwhile qatar attorney general say tuesday country evidence hack qatar state news agency link countries sever tie doha u.s. state department question gulf motives qatar boycott