Israel's Deputy Prime Minister Dan Meridor said on Thursday a deadly Syrian mortar strike on a Turkish town had to be considered an attack on a member of the NATO alliance.
Israel reportedly moved tanks close to the border with Egypt following a cross-border attack in which an Israeli civilian was killed.
Egypt's energy companies have terminated a long-term deal to supply Israel with gas after the cross-border pipeline sustained months of sabotage since a revolt last year, a stakeholder in the deal said on Sunday.
Western powers brushed aside Russian criticism of a U.S.-drafted Security Council resolution authorizing an advance team of U.N. observers to monitor Syria's fragile ceasefire and said on Friday they hoped to put it to a vote this weekend.
The Muslim Brotherhood has warned that Egypt may review its 1979 peace deal with Israel if the United States cuts aid to the country, a move that could undermine a cornerstone of Washington's Middle East policy.
Israel has presented Palestinians with its ideas for the borders and security arrangements of a future Palestinian state, in a bid to keep exploratory talks alive, Palestinian and Israeli sources said on Friday.
A radical Islamist party in Egypt said it will respect the country's peace treaty with Israel.
Egypt's new foreign minister said the days of Israel getting cheap gas and strategic benefits are over.
Amr Moussa, the head of the Arab League and an Egyptian presidential candidate, said he would not break his country's peace treaty with Israel. According to several news outlets, Moussa said he would keep the treaty but would plan to renegotiate the deal supplying natural gas to Israel.