DOHA/CAIRO: Sunday's delayed start to the Gaza ceasefire and incidents on Monday (Jan 20) in which Israeli troops shot at Palestinians approaching them underline some of the hiccups likely to face a deal that will play out in the shadow of mutual mistrust and bitterness. Qatar and Egypt, which brokered the deal alongside the US, have set up a communications hub to tackle any problems, where officials who worked on the deal for months hope to head off new clashes between foes locked in a years-