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If primaries and caucus victories are still all about media attention and momentum, then, yes, it's critical who wins Michigan's statewide vote Tuesday. All the more so if that winner is not Mitt Romney, who grew up there and whose dad was governor in the 1960s.

But as to collecting actual delegates for the actual GOP nomination? Tuesday's vote in Michigan probably will not matter much at all.

Israeli officials say they won't warn the U.S. if they decide to launch a pre-emptive strike against Iranian nuclear facilities, according to one U.S. intelligence official familiar with the discussions. The pronouncement, delivered in a series of private, top-level conversations, sets a tense tone ahead of meetings in the coming days at the White House and Capitol Hill.

The senior police official investigating wrongdoing by journalists in London says there was a culture of illegal payments at the Sun tabloid to create a network of paid informants across the British government. The Sun is the second tabloid owned by Rupert Murdoch's News Corp to be the focus of wrongdoing.

Arizona and Michigan voters cast their ballots Tuesday in the Republican presidential primary. A month ago, nobody expected these states to be consequential, but it's clear that the results could dramatically change the direction of the race.

Morning Edition's Steve Inskeep talks to David Wessel, of "The Wall Street Journal," and Zanny Minton Beddoes, of "The Economist," about how to read the latest economic signs, and whether there are any bright areas for growth.

Transcript

SONARI GLINTON, BYLINE: And I'm Sonari Glinton traveling with the Rick Santorum campaign in Kalamazoo, Michigan. While Mitt Romney was rocking out to the sounds of Kid Rock, Rick Santorum supporters were being entertained by founding father Patrick Henry.

LAWRENCE WESCO: (as Patrick Henry) I know not what course others might take, but as for me give me liberty or give me death.

David Greene has business news.

Transcript

DAVID GREENE, HOST:

Let's talk now about a different kind of traffic jam: traffic jams on the information highway. All that data flowing through broadband Internet networks is prompting mobile phone companies to throttle some of their customers, especially the heaviest users.

We called up Rich Jaroslovsky, the technology columnist for Bloomberg News and a regular guest here on MORNING EDITION, and we asked him to explain data throttling.

Matt Spaccarelli was one of those unlimited data customers being throttled by AT&T. He took his beef to small claims court, and last Friday he was awarded $850. His was a lone suit. AT&T's contract forbids class-action lawsuits.

In certain parts of Syria, the violence is unending and it is mainly focused on the city of Homs. For the past 25 days, the Syrian army has been bombarding the neighborhoods of Homs that have been resistant to the government.