By ISSAM ADWAN
GAZA CITY, Gaza Strip (AP) — Israel has reopened a main crossing with the Gaza Strip, allowing thousands of Palestinian laborers to enter the country for the first time since sealing it last week. The crossing reopens after weeks of violent protests along Gaza’s frontier with Israel, where demonstrators have thrown explosives and rocks and flew incendiary balloons that sparked fires. The protests have driven up tensions, prompting Israel to launch airstrikes in the territory that targeted military posts belonging to the militant Hamas that rules Gaza. Early Thursday, workers thronged the crossing before being let through. Some rested on patches of grass as they waited to cross.