Palestinians wait at the Rafah border crossing with Egypt, in the southern Gaza Strip, after it was opened for two days by Egyptian authorities, on May 11, 2016. On May 2 Israeli Defence Minister Moshe Yaalon announced the reopening of one of the main crossing points into the Palestinian Gaza Strip, which has been closed for at least eight years. Israel imposed a tight air, sea and land blockade on Gaza in 2006, designed to prevent the Islamist Hamas movement that controls the territory from rearming. Israel controls all but one of the crossing points with Gaza -- the Rafah crossing into Egypt, the Erez crossing was closed to the passage of goods in 2008. Photo by Abed Rahim Khatib/ Flash90

Palestinians wait at the Rafah border crossing with Egypt, in the southern Gaza Strip, after it was opened for two days by Egyptian authorities, on May 11, 2016. On May 2 Israeli Defence Minister Moshe Yaalon on Monday announced the reopening of one of the main crossing points into the Palestinian Gaza Strip, which has been closed for at least eight years. Israel imposed a tight air, sea and land blockade on Gaza in 2006, designed to prevent the Islamist Hamas movement that controls the territory from rearming. Israel controls all but one of the crossing points with Gaza -- the Rafah crossing into Egypt, the Erez crossing was closed to the passage of goods in 2008. Photo by Abed Rahim Khatib/ Flash90

Palestinians wait at the Rafah border crossing with Egypt, in the southern Gaza Strip, after it was opened for two days by Egyptian authorities, on May 11, 2016. On May 2 Israeli Defence Minister Moshe Yaalon announced the reopening of one of the main crossing points into the Palestinian Gaza Strip, which has been closed for at least eight years. Israel imposed a tight air, sea and land blockade on Gaza in 2006, designed to prevent the Islamist Hamas movement that controls the territory from rearming. Israel controls all but one of the crossing points with Gaza -- the Rafah crossing into Egypt, the Erez crossing was closed to the passage of goods in 2008. Photo by Abed Rahim Khatib/ Flash90

Palestinians wait at the Rafah border crossing with Egypt, in the southern Gaza Strip, after it was opened for two days by Egyptian authorities, on May 11, 2016. On May 2 Israeli Defence Minister Moshe Yaalon announced the reopening of one of the main crossing points into the Palestinian Gaza Strip, which has been closed for at least eight years. Israel imposed a tight air, sea and land blockade on Gaza in 2006, designed to prevent the Islamist Hamas movement that controls the territory from rearming. Israel controls all but one of the crossing points with Gaza -- the Rafah crossing into Egypt, the Erez crossing was closed to the passage of goods in 2008. Photo by Abed Rahim Khatib/ Flash90

Palestinians wait at the Rafah border crossing with Egypt, in the southern Gaza Strip, after it was opened for two days by Egyptian authorities, on May 11, 2016. On May 2 Israeli Defence Minister Moshe Yaalon announced the reopening of one of the main crossing points into the Palestinian Gaza Strip, which has been closed for at least eight years. Israel imposed a tight air, sea and land blockade on Gaza in 2006, designed to prevent the Islamist Hamas movement that controls the territory from rearming. Israel controls all but one of the crossing points with Gaza -- the Rafah crossing into Egypt, the Erez crossing was closed to the passage of goods in 2008. Photo by Abed Rahim Khatib/ Flash90

Palestinians wait at the Rafah border crossing with Egypt, in the southern Gaza Strip, after it was opened for two days by Egyptian authorities, on May 11, 2016. On May 2 Israeli Defence Minister Moshe Yaalon announced the reopening of one of the main crossing points into the Palestinian Gaza Strip, which has been closed for at least eight years. Israel imposed a tight air, sea and land blockade on Gaza in 2006, designed to prevent the Islamist Hamas movement that controls the territory from rearming. Israel controls all but one of the crossing points with Gaza -- the Rafah crossing into Egypt, the Erez crossing was closed to the passage of goods in 2008. Photo by Abed Rahim Khatib/ Flash90

Palestinians wait at the Rafah border crossing with Egypt, in the southern Gaza Strip, after it was opened for two days by Egyptian authorities, on May 11, 2016. On May 2 Israeli Defence Minister Moshe Yaalon announced the reopening of one of the main crossing points into the Palestinian Gaza Strip, which has been closed for at least eight years. Israel imposed a tight air, sea and land blockade on Gaza in 2006, designed to prevent the Islamist Hamas movement that controls the territory from rearming. Israel controls all but one of the crossing points with Gaza -- the Rafah crossing into Egypt, the Erez crossing was closed to the passage of goods in 2008. Photo by Abed Rahim Khatib/ Flash90

Palestinians wait at the Rafah border crossing with Egypt, in the southern Gaza Strip, after it was opened for two days by Egyptian authorities, on May 11, 2016. On May 2 Israeli Defence Minister Moshe Yaalon announced the reopening of one of the main crossing points into the Palestinian Gaza Strip, which has been closed for at least eight years. Israel imposed a tight air, sea and land blockade on Gaza in 2006, designed to prevent the Islamist Hamas movement that controls the territory from rearming. Israel controls all but one of the crossing points with Gaza -- the Rafah crossing into Egypt, the Erez crossing was closed to the passage of goods in 2008. Photo by Abed Rahim Khatib/ Flash90

Palestinians wait at the Rafah border crossing with Egypt, in the southern Gaza Strip, after it was opened for two days by Egyptian authorities, on May 11, 2016. On May 2 Israeli Defence Minister Moshe Yaalon announced the reopening of one of the main crossing points into the Palestinian Gaza Strip, which has been closed for at least eight years. Israel imposed a tight air, sea and land blockade on Gaza in 2006, designed to prevent the Islamist Hamas movement that controls the territory from rearming. Israel controls all but one of the crossing points with Gaza -- the Rafah crossing into Egypt, the Erez crossing was closed to the passage of goods in 2008. Photo by Abed Rahim Khatib/ Flash90

Palestinians wait at the Rafah border crossing with Egypt, in the southern Gaza Strip, after it was opened for two days by Egyptian authorities, on May 11, 2016. On May 2 Israeli Defence Minister Moshe Yaalon announced the reopening of one of the main crossing points into the Palestinian Gaza Strip, which has been closed for at least eight years. Israel imposed a tight air, sea and land blockade on Gaza in 2006, designed to prevent the Islamist Hamas movement that controls the territory from rearming. Israel controls all but one of the crossing points with Gaza -- the Rafah crossing into Egypt, the Erez crossing was closed to the passage of goods in 2008. Photo by Abed Rahim Khatib/ Flash90

Palestinians wait at the Rafah border crossing with Egypt, in the southern Gaza Strip, after it was opened for two days by Egyptian authorities, on May 11, 2016. On May 2 Israeli Defence Minister Moshe Yaalon announced the reopening of one of the main crossing points into the Palestinian Gaza Strip, which has been closed for at least eight years. Israel imposed a tight air, sea and land blockade on Gaza in 2006, designed to prevent the Islamist Hamas movement that controls the territory from rearming. Israel controls all but one of the crossing points with Gaza -- the Rafah crossing into Egypt, the Erez crossing was closed to the passage of goods in 2008. Photo by Abed Rahim Khatib/ Flash90

Palestinians wait at the Rafah border crossing with Egypt, in the southern Gaza Strip, after it was opened for two days by Egyptian authorities, on May 11, 2016. On May 2 Israeli Defence Minister Moshe Yaalon announced the reopening of one of the main crossing points into the Palestinian Gaza Strip, which has been closed for at least eight years. Israel imposed a tight air, sea and land blockade on Gaza in 2006, designed to prevent the Islamist Hamas movement that controls the territory from rearming. Israel controls all but one of the crossing points with Gaza -- the Rafah crossing into Egypt, the Erez crossing was closed to the passage of goods in 2008. Photo by Abed Rahim Khatib/ Flash90

Palestinians wait at the Rafah border crossing with Egypt, in the southern Gaza Strip, after it was opened for two days by Egyptian authorities, on May 11, 2016. On May 2 Israeli Defence Minister Moshe Yaalon announced the reopening of one of the main crossing points into the Palestinian Gaza Strip, which has been closed for at least eight years. Israel imposed a tight air, sea and land blockade on Gaza in 2006, designed to prevent the Islamist Hamas movement that controls the territory from rearming. Israel controls all but one of the crossing points with Gaza -- the Rafah crossing into Egypt, the Erez crossing was closed to the passage of goods in 2008. Photo by Abed Rahim Khatib/ Flash90

Palestinians wait at the Rafah border crossing with Egypt, in the southern Gaza Strip, after it was opened for two days by Egyptian authorities, on May 11, 2016. On May 2 Israeli Defence Minister Moshe Yaalon announced the reopening of one of the main crossing points into the Palestinian Gaza Strip, which has been closed for at least eight years. Israel imposed a tight air, sea and land blockade on Gaza in 2006, designed to prevent the Islamist Hamas movement that controls the territory from rearming. Israel controls all but one of the crossing points with Gaza -- the Rafah crossing into Egypt, the Erez crossing was closed to the passage of goods in 2008. Photo by Abed Rahim Khatib/ Flash90

Palestinians wait at the Rafah border crossing with Egypt, in the southern Gaza Strip, after it was opened for two days by Egyptian authorities, on May 11, 2016. On May 2 Israeli Defence Minister Moshe Yaalon announced the reopening of one of the main crossing points into the Palestinian Gaza Strip, which has been closed for at least eight years. Israel imposed a tight air, sea and land blockade on Gaza in 2006, designed to prevent the Islamist Hamas movement that controls the territory from rearming. Israel controls all but one of the crossing points with Gaza -- the Rafah crossing into Egypt, the Erez crossing was closed to the passage of goods in 2008. Photo by Abed Rahim Khatib/ Flash90

Palestinians wait at the Rafah border crossing with Egypt, in the southern Gaza Strip, after it was opened for two days by Egyptian authorities, on May 11, 2016. On May 2 Israeli Defence Minister Moshe Yaalon announced the reopening of one of the main crossing points into the Palestinian Gaza Strip, which has been closed for at least eight years. Israel imposed a tight air, sea and land blockade on Gaza in 2006, designed to prevent the Islamist Hamas movement that controls the territory from rearming. Israel controls all but one of the crossing points with Gaza -- the Rafah crossing into Egypt, the Erez crossing was closed to the passage of goods in 2008. Photo by Abed Rahim Khatib/ Flash90

Palestinians wait at the Rafah border crossing with Egypt, in the southern Gaza Strip, after it was opened for two days by Egyptian authorities, on May 11, 2016. On May 2 Israeli Defence Minister Moshe Yaalon announced the reopening of one of the main crossing points into the Palestinian Gaza Strip, which has been closed for at least eight years. Israel imposed a tight air, sea and land blockade on Gaza in 2006, designed to prevent the Islamist Hamas movement that controls the territory from rearming. Israel controls all but one of the crossing points with Gaza -- the Rafah crossing into Egypt, the Erez crossing was closed to the passage of goods in 2008. Photo by Abed Rahim Khatib/ Flash90