51.   A sandstorm on Sunday forced the closure of the Suez Canal and the diversion of the planes of British and Iraqi foreign ministers.

52.   Acute air pollution has forced the closure of several thousand elementary schools in the Iranian capital, the official Islamic Republic News Agency reported Monday.

53.   As a permanent council member, China could veto an extension and force the closure of the mission.

54.   As one of five permanent council members, China could veto an extension and force closure of the U.N. mission.

55.   Before the storm hit the coast, it had already killed five people and halted trains and ferries and forced the closure of highways.

56.   Before the storm made landfall, it had already killed five people and halted trains and ferries and forced the closure of highways.

57.   Bus routes and the London Underground subway service were also disrupted, as protesters milled through the streets and forced the closure of four stations.

58.   Bus routes and the London Underground subway service were also disrupted, as protesters milled through the streets and forced the closure of some stations.

59.   But fierce fighting in the capital in April and May forced the closure of schools and left most of them wrecked or looted bare.

60.   But ships passed through the Suez Canal, unlike Sunday and Monday when the storm forced its closure.