The two al-Ottol brothers are recovering in separate rooms of their house, wounded in the latest round of fighting between rival Hamas and Fatah - one on each side. Hamada al-Ottol, 19, was wounded while fighting for Fatah, the movement of Palestinian President Mahmoud Abbas. He wants revenge. His brother, Tahseen, 22, of Hamas, hopes a summit underway in Mecca, Saudi Arabia, can stop the internal conflict before the rift between them becomes irreconcilable. More than 100 Palestinians have been killed in months of clashes that followed a Hamas election victory a year ago, with most of the security forces remaining in the hands of Fatah, which lost the vote. Flareups have led to fears of an all-out civil war between the two most powerful Palestinian movements. Late Wednesday, a Hamas gunmen was shot and killed in Gaza. It was not clear if the shooting was connected to the conflict with Fatah or a family feud. Abbas is meeting in Mecca with Hamas leaders in the latest in a series of attempts to bridge wide ideological gaps and form a unity government. The brothers say they feel each other's pain and will never point their guns at each other. But Hamada did not want to express his views in his brother's presence. He was interviewed in his room before joining his brother upstairs. He sharply criticized Hamas, blaming it for targeting Fatah members, and said his group only defended itself. The family had to keep the brothers on two separate floors in the same house, because arguments broke out between their visitors, from Fatah and Hamas. "Our guns have now become impure. The fighting and the blood has become like a cup of tea, a very normal thing," Hamada said. The two were wounded in the same battle, when Hamas gunmen stormed an uncle's house. Hamada was hit by shrapnel, breaking his jaw and leaving him with only one eye. Tahseen went to the house to warn his brother but was hit with a bullet in the stomach, he said. Four people died in the battle, two from each side. The fact that he went to warn his brother, Tahseen said, is proof that brothers still stand up for each other. "I have an opinion and he has his. But the leaders of Hamas and Fatah shouldn't widen this gap between us," he said from his bed. Their father, Mohammed, 48, said if the leaders in Mecca do not reach an agreement, he will pull his sons from the warring security factions. "How much worse can it be?" he said. "Hamada used to have two eyes. Now he has one."