BBC:巴格达＂绿区＂遭到火箭弹袭击，死２伤１５

Two foreign contractors working for the UN have been killed and 15 wounded in a rocket attack on Baghdad's high-security Green Zone, the UN says.

联合国说，火箭弹袭击了巴格达的高度安全的绿区，两名为联合国工作的外国承包商被打死， 15人受伤。

The Green Zone houses government offices and many foreign embassies.

绿区包括政府部门和许多外国使馆。

It is not known who carried out the attack, which comes just days after the Iraqi parliament approved a new security pact with the United States.

现在还不清楚谁发动了这次袭击，袭击事件是发生在伊拉克议会批准了一项与美国的新安全协议之后几天．

The victims worked for a catering company contracted by the UN Assistance Mission for Iraq, officials say.

There have been many such attacks in the past, but they stopped after a ceasefire earlier this year between the Iraqi government and supporters of the anti-American Shia cleric Moqtada Sadr, says the BBC's Humphrey Hawksley in Baghdad.

BBC的在巴格达汉弗莱说，今年早些时候有许多这类攻击发生，但他们在伊拉克政府和反美什叶派教士萨德尔支持者之间达成停火协议后停火．

On Thursday, the Iraqi parliament voted in favour of a new security pact with the United States, under which American troops are to leave Iraq by the end of 2011.

上周四，伊拉克议会投票赞成一项与美国新的安全协议，根据协议美军撤离伊拉克要到2011年底。

Moqtada Sadr condemned the agreement and called for three days of protests against the plan, but he specified they should be peaceful.

萨德尔谴责了协议，并号召进行3天的抗议活动，但他指明他们应该是和平的。

Levels of violence in Iraq have fallen to a four-year low, but bombings continue on an almost daily basis.

伊拉克的各类暴力时间已降至四年低点，但持续的爆炸事件几乎每天都有。

The UN's presence in Iraq has been limited since a suicide bombing of its Baghdad headquarters in 2003 killed 22 people, including its top envoy, Sergio Vieira de Mello.

由于2003年自杀炸弹袭击联合国设在巴格达的总部造成22人死亡，包括其最高特使德梅洛，联合国在伊拉克的存在是有限的。