June 19, 2013 -- Updated 2316 GMT (0716 HKT)
Ira Helfand and Alan Robock say even with the reduced nuclear arsenal proposed by President Obama, we have enough weapons to obliterate ourselves.
Mark Quarterman says the slaughter of elephants for their tusks is at its worst in decades. As demand for ivory soars in Asia, Africa's vicious militant groups are killing elephants to pay for their arms and ammunition.
Frida Ghitis says in this era of connectivity, a little complaint can erupt into massive demonstrations.
Yury Fedotov says progress has been made but not fast enough to help millions of trafficking victims
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