He said the expulsion is obviously a matter of concern to the United States and a step backward,and that North Korea has only brought upon itself further isolation.

VOA: standard.2009.04.15

John Brennan, U.S.Deputy National Security Advisor for Counterterrorism and Homeland Security, says that while in Guadalajara, the three North American leaders will prepare to take their cooperation a step further.

VOA: standard.2009.08.10

"But also to take it a step further and think how we can - not only women but also men - how we can together change the status of women and make it better."

VOA: standard.2010.06.24