Sean Penn's role in Haiti has evolved from heading a band of volunteers and serving as unofficial mayor of a homeless camp to becoming ambassador-at-large for President Michel Martelly, the first non-Haitian to receive the designation.
The gas pipeline had long drawn complaints of Mubarak-era corruption, popular anger at Israel, and the failure of commercial dealings to improve Egypt-Israel ties.
Some 80 percent of cocaine leaving South America goes by sea, highlighting the importance of maritime routes to traffickers, writes a guest blogger.
When South Sudan declared independence from Sudan, it took three quarters of the formerly united country's oil, which has since been a source of tension and conflict.
Colombia's President Santos is riding high regionally, but a new poll suggests his domestic approval ratings have dropped, writes guest blogger James Bosworth.