Sari Bashi of the group Gisha argued before the Israeli Supreme Court Thursday that Israel is still responsible for Gazan civilians because it controls the enclave's borders, airspace, and sea space.
The group says suicide attacks may begin again in response to Thursday's Israeli airstrike on the home of Hamas leader Nizar Rayan.
But Israel also reopens border to allow humanitarian supplies into Palestinian territory.
John McCain leads Barack Obama by 12 percent in one Israeli poll, a reflection of security concerns.
Rights groups report a sharp increase of attacks by West Bank settlers on Palestinians, as well as rising right-wing violence against left-leaning Israelis.
Foreign Minister Tzipi Livni won the Kadima Party primary to replace Ehud Olmert who has been beset by corruption charges.
Forming a single binational state is among the alternatives being raised to the two-state solution.
French President Sarkozy, in Damascus this week, was also thought to be seeking Syria's help in dealing with Iran's nuclear program.