Chinese president arrives in Seoul for Nuclear Security Summit Chinese President Hu Jintao (L) and his wife Liu Yongqing wave as they arri...

Chinese president arrives in Seoul for Nuclear Security Summit

Chinese President Hu Jintao (L) and his wife Liu Yongqing wave as they arrive in Seoul, capital of South Korea, March 25, 2012. Hu Jintao arrived here on Sunday for the two-day Nuclear Security Summit, which begins on March 26. (Xinhua/Huang Jingwen)

Chinese President Hu Jintao (L) and his wife Liu Yongqing wave as they arrive in Seoul, capital of South Korea, March 25, 2012. Hu Jintao arrived here on Sunday for the two-day Nuclear Security Summit which begins on March 26. (Xinhua/Pang Xinglei)

SEOUL, March 25 (Xinhua) -- Chinese President Hu Jintao arrived in Seoul Sunday for a summit aimed at strengthening international cooperation on nuclear security.

At the two-day Nuclear Security Summit which began on Monday, leaders from over 50 nations and international organizations are expected to review achievements scored since the Washington summit in 2010.

They will discuss cooperative measures to combat the threat of nuclear terrorism, protect nuclear materials and related facilities, and prevent illicit trafficking of nuclear materials, according to the host South Korea.

The leaders will also exchange views on strengthening nuclear safety, which has become the focus of renewed attention following the Fukushima nuclear accident in Japan last year.