NILIN, West Bank,  - Palestinian protesters clashed with troops in the occupied West Bank on Wednesday in one of several demonstrations marking four years since the world court called for the demolition of parts of Israel's separation barrier. Soldiers fired tear-gas as teenagers hurled stones in running clashes among the terraced olive groves and cactus walls outside the village of Nilin, where residents stage weekly demonstrations against a nearby expansion of the barrier. About 200 Palestinian and international activists had marched to the construction site, a wide gravel gash running down a hillside, before several young men climbed on to a parked earthmover and broke its windows. Soldiers in several jeeps rushed to the scene and fired tear-gas as the youths took cover among the olive trees and threw rocks at them. "Down with the occupation, down with the occupation" Hassan Musa, a 33-year-old schoolteacher yelled as he waved an olive branch and a Palestinian flag in front of a group of soldiers. "This is Abu Ghraib, Nilin will be a prison like Abu Ghraib" he said, referring to the notorious prison in Iraq, before soldiers set off tear-gas bombs and wrestled him to the ground. "I want peace, I want peace" Musa screamed as he was dragged to a waiting jeep. Another three people were detained, witnesses said. At least seven people, international activists among them, were wounded by rubber bullets and dozens suffered from tear-gas inhalation, organisers said. An Israeli military spokeswoman said "violent and illegal riots" had taken place outside the village and that a soldier, a border policeman and a maintenance worker were hit by rocks and injured. Other protests were held in Deir al-Ghuzzun, near the northern town of Tulkarem, and in Azzum Atma near the town of Qalqiliya, which is almost completely surrounded by the barrier. The demonstrations marked four years since the International Court of Justice issued a non-binding resolution calling for parts of the barrier inside the West Bank to be torn down and for a halt to construction there. "Our goal is to stop the bulldozers," said Salah Khawaja, one of the organisers of the recent Nilin protests at which dozens of Palestinians, international activists and some Israeli security forces have been wounded. Meanwhile, an Israeli commission has approved the building of 920 new homes in occupied East Jerusalem, the municipality said on Wednesday, in a new blow to shaky peace talks with the Palestinians. The Palestinians reacted angrily to the new settlement expansion, warning of its negative impact on the peace process. "The district commission has approved for construction 920 housing units in Har Homa," a statement said, referring to a neighbourhood in East Jerusalem, known in Arabic as Jabel Abu Ghneim, that has more than 10,000 residents. The Jewish state's settlement expansion in Jerusalem has infuriated the Palestinians, who have accused Israel of obstructing peace efforts. "We warn the Israeli government against the repercussions of continuing the settlement expansion, especially in Jerusalem, on the peace negotiations," Palestinian president Mahmud Abbas's spokesman Nabil Abu Rudeina told AFP.