By Dawoud Abu Alkas , Haseeb Alwazeer and Nidal al-Mughrabi GAZA/CAIRO, May 29 (Reuters) - Hamas said on Friday that Israeli Prime Minister Benjamin Netanyahu's declaration that his country would expand its area of control in Gaza was a dangerous escalation, as residents of the Palestinian territory also voiced alarm at the plan. Under a ceasefire deal in October Israel's military was to remain in control of 53% of Gaza, but Netanyahu said on Friday that it would expand that area to an initial 70%, without laying out details or a timeline.