It remains a general political rule throughout history that incumbent who presides over economic recovery or expansion expects to win re-election, especially when a dominant majority faces charmless, extreme and divided opposition. England’s David Cameron now enjoys his second term as Britain’s Prime Minister, but his tenure has promoted a political crisis that he may not survive.

On April 11, 2015, President of United States Barack Obama and his Cuban counterpart Raul Castro shook hands at the Summit of Americas in Panama. In continuation of that, Obama visited Cuba to restore US-Cuba relations. Obama also became the first incumbent president of the US to do such since 1928.