Nigel Inkster,a terrorism expert at the International Institute for Security Studies says the 2005 London bombings proved that the city's transport network is vulnerable.

VOA: standard.2010.04.01

In 1889, the German Government decided to use the postal service as an information network to create Social Security.

889年，德国政府决定将邮政用作,建立的社会保障的信息网络。

耶鲁公开课 - 金融市场课程节选

Mr.Obama said the United States and NATO agree that it is critically important to dismantle the al-Qaida network and work effectively with the Afghan government to ensure security in the country.

VOA: standard.2009.09.29

Does it need refinement in some way?" "And if it does need some adjustment in light of the events that have taken place over the last number of months, including the election and so on, and then what are the implications of that in terms of General McChrystal's resource request?" The secretary said the United States will not abandon its core mission in Afghanistan, which President Obama described as the destruction of the al-Qaida terrorist network, because it is "critical" to U.S.national security.

VOA: standard.2009.10.23