Welcoming the decision of Chinese President Hu Jintao to attend the Nuclear Security Summit in Washington later this month,the White House said this shows that despite differences both the countries can work together on key issues like nuclear proliferation. "We are pleased that China is coming to the event," the White House Press Secretary,Bill Burton,said. "As we have long said,we have an important relationship with China,one in which there are many issues of mutual concern that we work on together," Burton said yesterday,adding that there are differences between the two nations at the same time. "I think this proves the point that despite those disagreements,we can work together on issues like nuclear proliferation." Burton said China understands "it's in their best interest that there isn't a nuclear arms race in the Middle East" and vowed to "working on" it. China's participation at the highest possible level reflects dragon's concern as well about nuclear security in the future,the State Department said. With China joining the UN talks on Iran sanctions,Burton said this is a very important step. "The (US) President feels that we've been able to unite the global community in a way that it hasnt been united before in putting pressure on Iran and halting their drive towards nuclear weapons "We're going to continue that process,and the President thinks that this spring were going to be able to be in a place where theres an agreement of those nations to apply real pressure to Iran," he said.