Greece has issued an international appeal for more tear gas after supplies ran low because police fired so much of it during a week of violent protests across the country. Officers released 4,600 capsules of tear gas during confrontations in Athens and nearly a dozen other cities since riots erupted over the fatal shooting of a 15-year-old schoolboy by a policeman last Saturday. The greek government is urgently seeking fresh supplies of tear gas from Israel and Germany, the police said. Yesterday, a report disputed claims by lawyers for the policeman accused of killing Alexandros Grigoropoulos that the bullet hit...