During Obama's two terms, the China-U.S. relationship saw an increasing depth, breadth and frequency of engagement. Over the past several years, the United States and China have worked hand in hand to confront challenges in ties and effectively manage their differences.
The two sides have played a key role in promoting global economic growth, bringing a positive deal on the Iran nuclear issue through multilateral diplomatic efforts, coping with the Ebola epidemic in West Africa, and most notably, in promoting the international community's response to climate change.
They have also made progress in establishing a bilateral investment treaty, strengthening mutual trust between the two militaries and achieving some breakthroughs in cyber security cooperation.
However, the relationship between Washington and Beijing hasn't always been a bed of roses.
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