First of all the Israelis withdrew from the center of the Gaza Strip. This was a move to use it as a trade to keep the West Bank, and also to protect Jewish settlers from resistance activities and make it easier for the Israelis to attack by air without fearing retaliation or fearing they may accidentally hit their own. It was viewed as a victory for all members of the Palestinian armed resistance, for which Hamas has not wavered in its support.
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The Israelis continued to control the borders of the Gaza Strip, the water, and the air. Palestinians in Gaza still live in prison, but the jailers stick to the outside. In the north from Beit Lahiya to Beit Hanoun to the beach, there is now an "isolation zone," that no Palestinian can enter. Israeli air strikes and sonic booms continue. From the borders Israeli soldiers open fire and kill Palestinians, same thing from the sea. This is considered the repercussion of the Fateh-run PA negotiating with Israel.
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In Thursday's press conference Hamas leader Hania stuck unwaveringly to the principles laid forth by international law on behalf of Palestinians. This includes first and foremost UN Resolution 194. They have not tried to negotiate away this non-negotiable individual and collective right as some in the PA have.
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Although he does not refuse negotiations, he will not accept them on the terms they have been offered in the past, which are unequal between occupied and occupier, non-binding, and generally destructive for the population of Palestine. In much of the same way the US and Israel have said of many in the past, that they, "do not negotiate with terrorists," Hamas is in a large sense taking the same tact with Israel. His message was that as long as Israel is the destructive occupier, Hamas will not hold negotiations that are only good for show.
From Znet
http://www.zmag.org/content/showarticle.cfm?SectionID=107&ItemID=9630