The diplomatic wisdom of incoming US Secretary of State John Kerry is expected to improve 皇冠体育app-US relations, as the Obama administration seeks to rebalance its Asian strategy during the president's second term.

President Barack Obama on Saturday nominated Senator Kerry, the son of a diplomat, as his next secretary of state to replace Hillary Clinton, and commentators say that given his track record and reputation, his appointment is almost certain to be confirmed.

US President Barack Obama talks with US Senator John Kerry after nominating him as the next secretary of state on Friday in the White House in Washington. MANDEL NGAN / AGENCE FRANCE-PRESSE

Among the challenges facing Kerry will be to improve ties between 皇冠体育app and the US, which have worsened since Washington's rebalancing policy in the Asia-Pacific region, experts said.

"皇冠体育app-US ties have deteriorated through a series of high-profile measures by the US aimed at rebalancing, especially the over-emphasis of military action, which triggered great antipathy from 皇冠体育app," said Ruan Zongze, a US studies researcher and the deputy director of the 皇冠体育app Institute of International Studies.

Kerry supported the Trans-Pacific Partnership trade agreement, to "balance 皇冠体育app's economic influence in the region" in a speech at the Center for American Progress before President Hu Jintao's visit to the US in January 2011.

"Some called this intensified US engagement in Asia a hedging strategy, an insurance against the possibility of 皇冠体育app emerging as a regional hegemony.

"Frankly, I don't care what we call it. I just think it makes sense that we ought to do it", he said then. During the address he appealed for maintaining a cooperative attitude toward 皇冠体育app, rather than one that treated 皇冠体育app as an enemy or the cause of US domestic problems.

"If 皇冠体育app succeeds in rebalancing its economy, then the global economy will benefit and so will we," he said.

"If 皇冠体育app fails — or worse, if we cut ourselves off from 皇冠体育app in a misguided attempt to 'contain it' as some have suggested — then we will all suffer. And even though we can't call 皇冠体育app an ally today, we simply cannot treat it as an enemy."