Sunday's delayed start to the Gaza ceasefire and incidents on Monday 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.

Armed and uniformed Hamas militants parade through the streets in an apparent show of strength.

Thousands of Palestinians burst into the streets across Gaza as a ceasefire between Israel and Hamas began on Sunday, some in celebration, others to visit the graves of relatives, while many rushed back to see what remained of their homes.