China's premier, Wen Jiabao, was in the Persian Gulf this week talking about oil.

China has become increasingly concerned about all the threats of conflict with Iran in the Persian Gulf, which supplies China with a great deal of its oil.

In fact, China is Iran's biggest customer. But Iran was not a stop on the Chinese itinerary — Saudi Arabia and the United Arab Emirates were.

The Justice Department's massive copyright case against the file-sharing website Megaupload.com had the Internet world hopping this week. But it also got lawyers talking, about the scope of a criminal investigation that spanned eight countries and the hard-nosed tactics that the government deployed.

In the early days of the Obama administration, Michael McFaul made his mark as the architect of the so-called reset of relations with Russia.

Now, as the new U.S. ambassador to Moscow, McFaul may need to reset relations once again as the two countries go through another rough patch.

Fresh Air Weekend highlights some of the best interviews and reviews from past weeks, and new program elements specially paced for weekends. Our weekend show emphasizes interviews with writers, filmmakers, actors, and musicians, and often includes excerpts from live in-studio concerts. This week:

Rick Santorum is officially the winner of the Jan. 3 Iowa Republican presidential caucus. The state Republican Party reversed itself from a previous assertion that it would not declare one, given problems at eight precincts, as The Des Moines Register reported.

In a news release late Friday, the party said it called the race "in order to clarify conflicting reports and to affirm the results released Jan. 18 by the Republican Party of Iowa."

The album Little Spark evokes a sound you might have heard 40 years ago, piercing through the static of your AM radio. The big string sections and angelic choruses are all there, echoing the hallmarks of classic orchestral pop. But Little Spark is the work of a modern singer-songwriter named Jessie Baylin.

When the U.S. Department of Justice and the FBI shut down the web site Megaupload yesterday, there were many responses, from outrage to confusion to applause, and nearly as many questions. One that stood out was simple: If Megaupload provides a service that can be used for legal pursuits, are they legally responsible for the users who use it to illegally share copyrighted material?