rome italy preparations host year group seven major power meet hamper slow transition u.s. state department create decision-making bottleneck european diplomatic source say g7 draw together unite state japan germany france britain italy canada countries take turn draw agendas see press concern italy hold 2017 presidency objectives lay week appear put rome collision course u.s. president donald trump promote highly sensitive topics climate change free trade immigration initiatives g7 foreign minister meet tuscany april 10-11 prepare leaders summit sicily end may however officials speak condition anonymity sensitivity issue say efforts reach agreement statements strategy ahead time normal part pre-meeting g7 diplomacy go slowly immediate concern lay state department new secretary state rex tillerson leave vacant numerous position see vital draft summit accord difficult talk someone give straight answer ones act head something even senior say senior italian government official involve g7 diplomacy white house yet nominate candidates either two deputy secretary state slot beneath tillerson chain six department regional bureaus lead act assistant secretaries state trump yet appoint ambassadors italy vatican make extremely difficult us prepare meet government official add state department official acknowledge position yet fill say prepare successful series g7 meet continue deep bench experience capable staff members serve key position work closely g7 counterparts include italian host official say diplomat another european capital also involve g7 preparations say department head beneath secretary state vital get approval agendas schedule often delicate word policy statements long know talk slow everything say add ambitious project would struggle take give confusion senior diplomat third eu capital say since president trump take office become difficult deal state department plan still learn work that senior italian diplomat lead behind-the-scenes g7 discussions raffaele trombetta say week africa would play prominent role italy summit agenda seven african leaders invite join talk sicily however sign rome low expectations year event italian government unlikely launch major fund initiative time trump look slash back u.s. foreign aid usually g7 set aside money particular cause time look like americans japanese want one either say italian government source trombetta say trust presidency slogan trust governments citizens countries also need renew trust leaders attend summit say note prime minister britain italy presidents france unite state would attend first g7 eu leaders worry trump might undermine 70 years strong trans-atlantic tie alarm criticism nato support trade protectionism rejection climate change policies anti-migrant rhetoric fly headwinds trombetta say italy want g7 reaffirm importance 2015 paris agreement oblige nations curb global warm senior white house advisers call trump renounce rome also eager commitment fight form protectionism say trombetta however acknowledge might hard achieve unite state month already break tradition endorse open trade meet g20 finance minister germany highly political issue expect go leaders deal taormina summit ... one main point tension presidency say italian prime minister paolo gentiloni fly unite state next month part seek understand trump g7 agenda ahead sicily summit trump push back unlikely face strong resistance italy make good relations unite state cornerstone foreign policy argue france germany britain never america say another senior government official authorize talk media trump always americans find way get along him u.s. diplomatic delay trump agenda snarl italy 's g7 agenda