U.S. President Barack Obama had a wide ranging telephone conversation with China's president on Wednesday, which touched on the global economy and world health issues as well as concerns about Pakistan and North Korea.
China's official Xinhua news agency says President Hu Jintao told Mr. Obama that his country wants to cooperate on tackling the financial crisis and other global and regional issues.
A Chinese Foreign Ministry spokesman Ma Zhaoxu says the two leaders also discussed tensions on the Korean peninsula, as well the situation in South Asia.
The White House says that during the discussion, Mr. Obama explained his concerns about recent threats to Pakistan by militant extremists and terrorists.
The Obama administration has put Pakistan at the center of the fight against terrorism and al-Qaida and views cooperation from China as an important part of the effort.
China has close ties with Pakistan and borders Afghanistan.
The United States is also looking to China for help in dealing with a standoff with North Korea, which recently walked away from international talks on ending its nuclear weapons programs.
On swine flu, Xinhua says Mr. Hu expressed China's desire to work with the World Health Organization, the United States and others to confront the global public health challenge.
The White House says the leaders "discussed regional security issues," but did not say whether Mr. Obama and Mr. Hu discussed last Friday's encounter between Chinese fishing boats and a U.S. Navy survey vessel of China's northeastern coast.
The incident was the latest in a series of high-seas standoffs this year which have put the two militaries on edge.
Earlier Wednesday, Beijing accused the U.S. naval vessel, the USNS Victorious, of violating international maritime law in the Yellow Sea. China also urged the United States to take steps to keep the incident from happening again.