The United States and Russia are at odds on so many issues that the upcoming summit could convince their two presidents to give up on better relations and accept estrangement.

With another five-year term, President Joko Widodo will possibly revive economic reform efforts and could take a more skeptical view toward China.

The African National Congress, which has governed since the end of apartheid, won again in May’s national election. But a growing opposition will watch to see whether it can revive the economy and cu…