GOP Sen. Lindsey Graham was a guest on "Piers Morgan Tonight" and gave his reaction to Pres. Barack Obama's Libya speech tonight. While some Republicans have criticized Pres. Obama's Libya response, including Graham earlier in the conflict, he instead turned the tables and criticized those in his own party tonight. "We made mistakes in Iraq, and to my fellow Republican friends, nobody complained about the cost of Iraq or Afghanistan on our watch," he told Piers Morgan. "I'm really tired of hearing people talking about 'it costs too much.'"

As for the rebels: "These people who are fighting Gadhafi, I don't believe are taking to the streets and risking their lives to replace Gadhafi with al-Qaeda."

Following Pres. Barack Obama's speech tonight about Libya, "Piers Morgan Tonight" will be live covering the speech and other news.

Piers Morgan will interview potential presidential candidate Donald Trump – and Rudy Giuliani – as well as GOP Sen. Lindsey Graham. He'll also talk to former presidential candidate Bill Richardson and Democratic Rep. Anthony Weiner. PJ Crowley, who recently resigned from his role at the State Department, will join Piers as well. All this and more, live at 9pmET.

Twitter co-founder Jack Dorsey is returning to the company in a new role. He announced the news, where else, on Twitter: "Today I'm thrilled to get back to work at @Twitter leading product as Executive Chairman. And yes: leading @Square forevermore as CEO."

Dorsey will join another Twitter co-founder Biz Stone on tomorrow's live "Piers Morgan Tonight." Also featured will be tweeting celebrities Martha Stewart, Alyssa Milano and more. Also for the show – has something happened to you, or have you witnessed something, that could have happened only on Twitter? Use the hashtag #OnlyOnTwitter before and during the show and maybe your tweet will be included!

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Piers Morgan has always been intrigued by Yoko Ono including the day she came to the LA studio. Not only was she intriguing, "But she also made a heartfelt, and very moving, appeal to the Japanese not to despair," he said.

He wrote about it yesterday in his weekly Daily Mail column. Piers also talked about his recent trip to Israel where he interviewed Israeli Prime Minister Benjamin Netanyahu... FULL POST

Each day, we here at "Piers Morgan Tonight" will put together the news you need to know – from what happened last night to what will happen today.

For March 28, 2011 -Questions surround highly radioactive water found, President Barack Obama is set to defend policy, an unlikely group make it to the Final Four... FULL POST