Smoke ascends after a Syrian military helicopter allegedly dropped a barrel bomb over the city of Daraya on Jan. 31.(FADI DIRANI/AFP/Getty Images)
Summary Barrel bombs are not especially effective weapons. They are often poorly constructed; they fail to detonate more often than other devices constructed for a similar purpose; and their lack of precision means they can have a disproportionate effect on civilian populations.
However, combatants continue to use barrel bombs in conflicts, including in recent and ongoing conflicts in Africa and the Middle East, and they are ideally suited to the requirements of resource-poor states.
Barrel bombs are improvised devices that contain explosive filling and shrapnel packed into a container, often in a cylindrical shape such as a barrel. The devices continue to be dropped on towns all over Syria. Indeed, there have been several documented cases of their use in Iraq over the past months, and residents of the city of Mosul, which was recently …
In the final years of the Soviet Union, Soviet leader Mikhail Gorbachev began orienting his foreign policy toward Asia in response to a rising Japan. Putin has also piloted a much-touted pivot to Asia, coinciding with renewed U.S. interest in the area. A good expression of intent was Russia's hosting of the Asia-Pacific Economic Cooperation summit in 2012 in Vladivostok, near Russia's borders with China and North Korea. Although its efforts in Asia have been limited by more direct interests in Russia's periphery and in Europe, Moscow recently has been able to look more to the east.
Shia loyal to the al-Houthi movement ride past Yemeni soldiers near Yaz, Yemen, in May. (MOHAMMED HUWAIS/AFP/Getty Images)
The success of a rebel campaign in northern Yemen is threatening to destabilize the already weak and overwhelmed government in Sanaa. After capturing the city of Amran, a mere 50 kilometers (30 miles) from the capital, in early July, the rebels from the al-Houthi tribe are in their strongest position yet. The Yemeni government is developing plans to divide the country into six federal regions, and the rebels believe this is their chance to claim territory for the future bargaining.
The central government is nearly powerless to fend off the rebels; its forces are already stretched thin. Neighboring Saudi Arabia has intervened in Yemen before and still supports Sunni tribes in the north, but the risk of inciting a Shiite backlash or creating space for jihadists to move in could deter another intervention.
Followers of Zaidi Islam, a branch of Shiism, rul…