China stands ready to maintain consultation and coordination with the United States and other parties within the 5-plus-1 mechanism, and in the United Nations and through other channels, he added.

Chinese President Hu Jintao (L) meets with U.S. President Barack Obama in Washington April 12, 2010. President Hu Jintao arrived in Washington on Monday to attend the Nuclear Security Summit slated for April 12-13. [Li Xueren/Xinhua]

The 5-plus-1 mechanism involves the permanent UN Security Council members -- Britain, China, France, Russia and the United States -- plus Germany.

Hu also stated China's principled position on the Iranian nuclear issue, saying China is always committed to upholding the international nuclear non-proliferation regime and peace and stability in the Middle East.

The two leaders met on the sidelines of the Nuclear Security Summit, which mainly discusses prevention of acts of nuclear terrorism.

Since the Obama administration took office, China-U.S. relations have witnessed positive development thanks to joint efforts.

In November 2009, Obama paid a state visit to China, during which Hu and Obama held in-depth, productive and candid discussions on bilateral relations and other issues of common interest. The two sides reached agreement on advancing U.S.-China relations in the new era.