Egypt's President Mohamed Morsi said there are some indications of possibility of a cease-fire over Gaza soon, but there are no guarantees yet.
He stressed that his government was in touch with both Israelis and Palestinians.
Morsi also denounced the Israeli offensive against Gaza Strip as a flagrant aggression against humanity, promising that his country will never abandon Gaza.
Morsi was speaking in Cairo after meeting Turkish Prime Minister Recep Tayyip Erdogan, who arrived in Egypt Saturday for a visit aimed at strengthening ties between the two countries. However, it will be dominated by the conflict in Gaza.
Egypt and Turkey are under pressure from the United States to get to stop firing rockets into Israel, but the two countries have in turn strongly condemned Israel for its attacks on the Palestinian enclave.
"In fact, it was Israel that violated the cease-fire," Erdogan said in Ankara before leaving for Egypt. "This is an Israeli tactic of pointing the finger at Hamas, in order to attack Gaza," Erdogan said Friday night.
At the same time, high-level Egyptian sources said that the truce talks are sponsored by Egypt, Turkey and America with Hamas. In addition, Israeli-American communication channels are open.
The same source said that, the security crew chief in the Israeli Defense Ministry, Amos Gilad, arrived in Cairo to meet with Egyptian intelligence leaders about the proposed truce.
A Palestinian official told Reuters the truce discussions would continue in Cairo on Sunday, saying "there is hope," but it was too early to say whether the efforts would succeed.
Obama spoke with Morsi on Friday, commending his country's efforts to de-escalate the situation and expressing his hope that these efforts would be successful, the White House said.
Meanwhile, an Israeli official confirmed that Morsi and Erdogan, were making efforts to promote a cease-fire and were in contact with Hamas leader in Cairo. Nevertheless, the official added, there was no clear outline for a cease-fire agreement.
On Hamas' behalf, a senior Hamas leader had earlier told AFP his organization was reluctant to agree a truce, because it doubted the terms of the cease-fire could be guaranteed.
"As long as the aggression continues, there will be no talk of appeasement. The fact that Israel continues to strike Gaza Strip proves that Israel is not serious about a cease-fire."
He also stressed that most of Hamas political leaders, as well as the leaders of the military wing, believe that they have not fully avenged the targeted killing of Ahmed Jabari, the general commander of the Qassam Brigades.
Early Sunday, Palestinian medical sources said, at least 10 journalists were wounded, with minor and moderate injuries, when Israeli warplanes damaged a complex of media offices in Gaza City. The building houses a number of foreign and Palestinian media organizations.
One hour later, a second Israeli airstrike hit a second media complex in Gaza City, the al-Shuruq building. Sky News Arabia and Al-Arabiya reported that, their offices have been affected.
An Israeli army spokesman said forces targeted the antennae of the building. He said it was used by Hamas for carrying out terror activities.
In Beit Lahiya, two children were killed and more than 10 people injured as two houses were bombed in northern Gaza.
What we're seeing in Gaza is that the international community has not yet understood the dimensions of what is happening over here. This is clear from the statements of the US president and British prime minister besides many world leaders, who are convinced that Israel is the victim and is defending itself and its people. But the truth is that Israel is the aggressor on all of what is Palestinian, be it in Gaza or the West Bank.
Israel just shows the world that it withdrew from Gaza, but in fact it is still occupying it. The international community must wonder how Gaza is under siege while being free from Israeli control. Who then is besieging it?
The resistance in Gaza is fighting the blockading of Gaza, and this is their right. Israel must bear the consequences of the Gaza siege.
What is happening today in Gaza is barbaric bombing of everything, indicating that Israel, which in 1967 defeated three Arab countries in six days, cannot in 2012 eliminate the resistance factions that have only limited arms. These faction's missiles were able to even reach Tel Aviv and Jerusalem. In addition, there are many other capabilities of the resistance factions that Israel does not want to announce, because the announcement of its warplane being downedis a disaster in itself. Certainly this will affect Israel and its army status as well, which is considered the best and strongest army in the Middle East, according to their media and their allies' media, too.
Israel must understand that the concept of power and murder is no longer usefull today. What works today is recognizing the Palestinian people and their right to their independent state. Hence we hereby ask and hope that the international community intervenes to put an end to the Gaza crisis. We need serious action and sincere resolve to the Palestinian issue, before disaster occurs and no one will know how to control it.
Sources in Arabic: