The foreign policy of the Obama Administration has sparked much criticism not only from the Republicans but also from within the Democrat Party in the last few years. The hardliner Republicans label him as weak and indecisive due to his attitudes towards Syria Civil War，the nuclear issue of Iran，and the Ukraine crisis. And even worse，American voters have been increasingly dissatisfied with the government’s failure to hold back the rise of ISIS and the deteriorating situation of counter-terrorism，which in part accounted for the failure of the Democratic Party in the midterm elections. Faced with rise of ISIS and the deteriorating situation of counter-terrorism，and the potential danger of a complete failure of the policy toward Iraq and Afghanistan，President Obama has to strike an uneasy balance：on the one hand，to prevent the regional situation from loss of control；on the other hand，to fulfill his promise in ending the two wars.

In the next two years，as the Republicans have taken control of the Congress，the Obama Administration’s foreign policy will face more criticism and resistance. Despite that，the government still has a chance to make breakthrough in Iranian Nuclear crisis，the normalization of the diplomatic relations with Cuba，and climate change diplomacy. For these issues，President Obama cannot expect much support from the Congress，though. In order not to become a “lame duck，” President Obama needs to make effective use of the administrative power to achieve the diplomatic goals. Asia-Pacific rebalancing strategy most probably becomes the diplomatic legacy of the Obama Administration. In the process of promoting it，special attention should be paid to avoiding any involvement in regional conflicts and great efforts should be made to achieve a balanced relationship with regional powers.