CNN 2008-10-20（在线收听）

I'm Asieh Namdar at the CNN.com newsroom in Atlanta. Here is a look at what is happening NOW IN THE NEWS.

A big political score for Barack Obama this weekend. Former US Secretary of State Colin Powell has officially endorsed the senator. Powell says Obama is better suited to address the nation's economic problems and improve its standing in the world. Powell who is a retired US General and a Republican was once seen as a possible presidential candidate himself.

President Bush is calling for a series of global summits to address the economy. The first summit will focus on ways that current crisis has been addressed as well as ways to keep it from happening again. No date has been said though a White House statement says the gathering will be held in the Unite States soon after the November 4th's General Election.

British and Iraqi leaders are discussing the future of British troops in Iraq. And Britain's new Defense Minister John Hutton made his first visit to Iraq over the weekend. A UN mandate allowing British forces to be in Iraq expires at the end of this year. The US is working on a similar deal to remain in Iraq beyond 2008.

And politics and comedy collided again on this weekend's episode of Saturday Night Live. Sarah Palin was on this show,  critiquing Tina Fey's impression of her, alongside Alec Baldwin and executive producer Lorne MIchaels. Tina Fey's  impersonation of Palin has turned into record ratings for SNL for the last few weeks.

And those are the headlines  this hour, for more on these stories and other news of the day, CNN is your source online, on TV, or when you are on the go.