Singaporean Prime Minister Lee Hsien Loong and visiting US Vice President Joe Biden reasserted the bilateral relationship, especially in security and trade, during their talks on July 26.

The US plays a ‘constructive role’ in the Asia Pacific region, which is vividly manifested through its engagement in the Trans-Pacific Partnership (TPP) negotiations, PM Lee said after the talks.

Both leaders applauded Japan ’s recent participation in TPP negotiations in Malaysia , looking towards a free trade area that accounts for 40 percent of the global GDP.

"TPP is not only an ambition, it's doable," Biden added, promising to get the TPP negotiations done in 2013.

As for security partnership, Biden said the two countries need to cooperate more closely in dealing with proliferation and other emerging threats, as well as maintaining and boosting their military relationship.

Biden is on his three-day visit in Singapore from July 25 to 27. He also called on President Tony Tan, and former Minister Mentor Lee Kuan Yew on July 26.

He is scheduled to visit the Pratt & Whitney aircraft engine overhaul facility and the US littoral combat ship (LCS) USS Freedom at the Changi Naval Base on July 27.-VNA.