From NPR news in Washington, I’m Louise Schiavone.

The President’s Counterterrorism Adviser says the US has so dismantled al-Qaeda that the potential for near term strike on US soil sling slim. John Brennan spoke on FOX News Sunday. He says the US remains mindful of the threats that could accompany the impending one year anniversary of the killing of Osama bin Laden.

"We are not going to let down our guard, and we are going to stay extra vigilant(机警的) in fact in this period of time.”

Speaking on ABC this week, Brennan said American’s many locations overseas are advised to be vigilant ahead of the anniversary.

Also today, Brennan was asked about the drama unfolding in Beijing, involving Chinese dissident Chen Guangcheng. He would not comment specifically but says the administration will do what’s appropriate. Secretary of State Clinton and Treasury Secretary Geithner are heading to Beijing this week for a long planed strategic and economic discussion. An advocacy(辩护) group in Texas called China Aid says that Chen escaped from house arrest and he is taking refuge at the US embassy in Beijing.

In Nigeria, an attack on a church service at a university campus has left 16 people dead. NPR’s Ofeibea Quist-Arcton says no group has claimed responsibility.

Details are * through that at least three explosions struck an old section of Bayero University campus in the historical northern city of Kano. Students were holding a Christian church service at the lecture hall. A spokesman for Nigeria’s national emergency management agency, Abubakar Jibril said that was sporadic(零星的) gunfire adding that rescue officials were initially unable to reach the site because what he described as a terrorist attack was continuing. Northern Nigeria and in January Kano specifically have been hit by a wave of attacks by a radical anti-government Islamic sect(宗派) known as Boko Haram, the name means “western education is sinful”. Ofeibea Quist-Arcton, NPR news, Juba.

A racing tragedy off coast of California has left three people dead. A sailor who retrieved two dead bodies said yacht looked like it had been through a blender. We get more on this story from Bob Hensley of Capitol Public Radio.

According to the US coast guard, the dead and missing crew members are from the sail boat named Aegean, which was participating in the Newport to Ensenada International Yachting Race. Debris(瓦砾堆) and varnish(清漆) from the boat were found near the Coronado Islands off the coast of Mexico. Officials have to determine what happened to the vessel which has based in Redondo Beach California. Two weeks ago, five crew members died after waves swept off a yacht 30 miles from San Francisco. The coast guard has temporarily stopped issuing permits for races off the northern California coast until the investigation into that incident has been completed. For NPR news, I’m Bob Hensley.

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United Nation Secretary General Ban Ki-moon is in Myanmar, also known as Burma. It’s his first visit there since a self-described civilian government assumed power. NPR’s Anthony Kuhn reports from Jakarta that Ban is the latest in a string of foreign dignitaries(高官) to observe developments there.

Ban has said that one goal of his trip is to acknowledge the country’s progress in democratic reforms and the US is committed to helping Myanmar push reforms forward. Ban will meet President Thein Sein and opposition leader Aung San Suu Kyi, and become the first foreign dignitary to address Myanmar’s parliament. Ban is also scheduled to visit northern Shan state where UN helps Myanmar to eradicate(根除) opium poppies. Also in Myanmar is the European Union’s top diplomat Catherine Ashton. The EU announces that it’ll suspend most of its sanctions against the Burma’s government. Anthony Kuhn, NPR news, Jakarta.

Attention soccer fans tickets for the soccer tournament at the London Olympics go on sale tomorrow in London before noon local time. Organizers are selling 1.4 million tickets. The sale lasts until May 6th, a couple of weeks after that another million tickets will be made available.

Simple assault charges have been filed against the former Miss New Hampshire USA. 26-year-old Nicole Houde is accused of punching, kicking and biting her boyfriend.

The box office giant this weekend, scored its points outside the US. While Disney’s Avengers premiered overseas with a reported 178 million dollars in ticket sales. “You are made to be ruled.” The movie opens in North America next Friday.

I’m Louise Schiavone, NPR news, Washington.