Prime Minister Shinzo Abe's trip to Vietnam, Thailand and Indonesia underscores that the Association of Southeast Asian Nations (ASEAN) remains the cornerstone of Japan's Asian diplomacy. Before cutting his trip short to deal with the kidnapping of Japanese nationals in Algeria, Abe commented, "Open seas are public assets and Japan will do utmost to protect them by cooperating with ASEAN. China's economic rise is definitely a plus for Japan but it is important for China to act responsibly as part of international society."

With the establishment of the China-ASEAN free trade area, communication in fields of personnel mobility, economic exchanges and cultural transmission between China and Southeast Asian countries are growing, even as disputes between the two remain. At this time, public diplomacy can play an important role in relations between China and Southeast Asian countries.

The Association of Southeast Asian Nations has appointed its first secretary-general from Vietnam, a one-party communist state and one of four ASEAN members in conflict with China over territory in the South China Sea. ASEAN has struggled over the past year to form a consensus on the issue and having a leader from Vietnam will keep the spotlight on the dispute.

Since the China-ASEAN Free Trade Area was launched in 2010, China has now become the organization's largest trading partner. Now to catch up with bilateral economic achievements, cultural exchange and cooperation are being emphasized.

India's decision to accede to the 1976 Asean Treaty of Amity and Cooperation in July 2003 was considered a major milestone in its diplomatic annals due to its swiftness and timeliness. Immediately, it upgraded India's status as well as its role in Asean.

It is wrong to suggest Australia has to choose between the US alliance and collaborating with the Association of Southeast Asian Nations. We can do both, but the trick lies in how we manage that. Greater engagement with Southeast Asia would augment our relationship with the US and China.

Fresh from the visit of US President Barack Obama, Thailand is set to host Chinese Premier Wen Jiabao this week. Although president Obama's visit took much of the attention of the press, the Chinese leader's visit is no less significant. The visit is very important in the relationship between the two countries, which will become increasingly sophisticated along as China continues to rise economically and politically.

Southeast Asian leaders endorsed a controversial human rights pact on Sunday during an annual summit in which they also focused on bruising territorial rows and deadly unrest in Myanmar. The leaders also plan to launch talks on a planned free trade zone that covers ASEAN and six other countries including China, Japan, and Australia.