Gaza Strip – Pro-Palestinian activists sent another boat to challenge Israel's blockade of the Gaza Strip on Tuesday and Egypt declared it was temporarily opening a crossing into the Palestinian territory after a raid on an aid flotilla that ended with Israeli soldiers killing nine activists. The raid provoked ferocious international condemnation of Israel, raised questions at home, and appeared likely to increase pressure to end its blockade that seeks to keep Iranian-backed Hamas from building its arsenal of weapons but has also deepened the poverty of the 1.5 million Palestinians in the strip. Turkey, which unofficially supported the flotilla, has led the criticism, calling the Israeli raid a "bloody massacre" and demanding that Washington condemn the raid. The White House has reacted cautiously, calling for disclosure of all the facts. There were signs, however, that the long-term strategic partnership between Israel and its most important Muslim ally would endure: Turkey canceled three joint land and sea exercises, but appeared to be otherwise maintaining deep military ties that include the planned delivery of $183 million in Israeli drones this summer. Israeli Defense Minister Ehud Barak spoke to his Turkish counterpart as well as their chief of staff Monday, and they agreed that the raid wouldn't affect weapons deals, defense officials said. The officials spoke on condition of anonymity because they were discussing sensitive military ties. Israeli Prime Minister Benjamin Netanyahu's spokesman, Mark Regev, indicated Israel would consider ways to ease the blockade to allow more goods into Gaza — a policy that has been quietly under way in recent months. "We have been expanding the assistance that has been going into the Gaza Strip — both the volume and the variety of goods — and we have ongoing dialogue with the international community. But he stressed that Israel could not end the blockade, fearing that Hamas would ship rockets and other weapons into the area. "We cannot have unfettered naval cargo going into the Gaza Strip," he said. Amid the tensions, the Israeli military said it carried out an airstrike in Gaza on Tuesday, and an Islamic militant group said three of its members were killed after firing rockets into southern Israel. Israeli authorities say the rockets landed in open areas and caused no injuries. Two militants infiltrating into Israel from Gaza were killed in a separate incident Tuesday, the military said. In other violence, Israeli hospital officials said an American woman lost her eye during a demonstration Monday in occupied Jerusalem against the naval raid. Emily Henochowicz of Maryland was in intensive care after undergoing surgery, said hospital spokeswoman Yael Bossem-Levy. Witnesses said Henochowicz, 21, was hit by a tear gas canister in the face while Palestinian youths were throwing rocks, although she was standing at a distance. The pro-Palestinian flotilla had been headed to Gaza with tens of thousands of tons of aid that Israel bans from Gaza. After days of warnings, Israel intercepted the flotilla under the cover of darkness early Monday, setting off a violent melee that left nine activists dead and dozens of people, including seven soldiers, wounded. Most of the dead were believed to be Turks. Israel said 679 people were arrested, and about 50 of those had left the country voluntarily. Hundreds who refused to cooperate remained jailed and subject to deportation. Israel says the Gaza blockade is needed to prevent Hamas, which has fired thousands of rockets into the Jewish state, from building up its arsenal. It also wants to pressure Hamas to free an Israeli soldier it has held for four years. Critics say the blockade has failed to weaken Hamas but further strapped an already impoverished economy. It also has prevented Gaza from rebuilding after a devastating Israeli military offensive early last year. Egypt, which has enforced the blockade with Israel since Hamas militants seized control of Gaza in 2007, said it was opening the border for several days to allow aid into the area as a humanitarian gesture. It was unclear, however, when Hamas guards at the frontier would let people out. Several thousand Gazans — some in cars with suitcases piled on their roofs, others on foot — rushed to the Egyptian border, hoping to take advantage of a rare chance to escape the blockaded territory.