Unlike nuclear materials, chlorine is easy to obtain and easy to transport, but difficult to trace. That is why counter-terrorism experts say recent events in Iraq may be practice runs for al-Qaida ambitions in the United States.
Unlike nuclear materials, chlorine is easy to obtain and easy to transport, but difficult to trace. That is why counter-terrorism experts say recent events in Iraq may be practice runs for al-Qaida ambitions in the United States.
Unlike nuclear materials,...