Fifty monitors from the Arab League have entered Syria to evaluate whether the country is complying with a regional plan to end violence. They entered the country Monday—the same day activists say the government killed at least 30 people. Their first stop was the city of Homs, which has been the seat of much of the violence. Activists say government tanks began pulling out early Tuesday. The Syrian government has promised the monitors freedom of movement but is also responsible for their security and transport.