School teachers in the northern West Bank city of Qalqilia went on strike on Sunday in protest of the Palestinian government's inability to pay their salaries. The teacher's union in the city stated that the strike will be implemented today and on Tuesday, on Wednesday the strike will starts at 10 with a protest in front of the education ministry building in the city. Other unions in varoius Palestinian cities in the West Bank are expected to go on strike this week, Palestinian sources reported.