21.   Unionized municipal workers called the strike after failing to reach an agreement with the government of Mayor Manuel Andres Lopez Obrador.

22.   We were there last week when the U.N. called for a NATO strike after heavy Serbian shelling of Sarajevo.

23.   Opposition parties resorted to strikes after the standoff defied international and local mediation efforts.

24.   Postal workers called off a national strike after unions and management reached a tentative agreement Thursday in a long running dispute over pay.

25.   Pharmacists on Friday called off a scheduled nationwide strike after closing drug stores for only one day.

26.   A four-day nationwide blackout eased Saturday as state power company workers ended their strike after the government threatened to fire them and seize their property.

27.   A militant opposition group, the Mohajir Qaumi Movement, called the strike after two of its workers died in police custody last week.

28.   A union of port workers and employees, Chittagong Dock Bandar Sramik Karmachari Parishad, called the strike after talks with the port authorities broke down Tuesday.

29.   Air traffic controllers, however, called off plans to join the strike after the apparent crash of a Ukrainian passenger jet in northern Greece late Wednesday.

30.   Alan Johnson, joint general secretary of the union, said it decided on further strikes after several days of negotiations reached no conclusion.