求几个英译汉的句子,含有定语从句,关于恐怖主义的,难度高一点儿的,跪谢

Two blasts in Kenya's capital came the same week the United States and the U.K.issued renewed warnings about possible terror attacks in Kenya,leading to a bristling response from the country's president Friday,who said such warnings strengthen the will of terrorists.
2.Terrorism is a global threat that knows no border,nationality or religion – a challenge that the international community must tackle together.NATO’s work on counter-terrorism focuses on improved threat awareness and preparedness,developing adequate capabilities and enhancing engagement with partner countries and other international actors.
3. Utility executives and federal energy officials have long worried that the electric grid is vulnerable to sabotage.That is in part because the grid,which is really three systems serving different areas of the U.S.,has failed when small problems such as trees hitting transmission lines created cascading blackouts.One in 2003 knocked out power to 50 million people in the Eastern U.S.and Canada for days.

句子里有定语从句，