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biological and chemical warfare

Syria Urges U.N. to Condemn Rebels After Apparent Chemical Attack

Syria Urges U.N. to Condemn Rebels After Apparent Chemical Attack

A hospital in Aleppo, Syria, on Saturday. Medics reported a flood of patients with breathing troubles, inflamed eyes and other symptoms after a shelling attack in the city.
News Analysis: A Strategy of Retreat in Syria, With Echoes of Obama

News Analysis: A Strategy of Retreat in Syria, With Echoes of Obama

President Trump has been far more engaged with the idea of using the military to secure the Mexican border than to counter Russia, Iran, North Korea and China.
News Analysis: A Strategy of Retreat in Syria, With Echoes of Obama

News Analysis: A Strategy of Retreat in Syria, With Echoes of Obama

President Trump has been far more engaged with the idea of using the military to secure the Mexican border than to counter Russia, Iran, North Korea and China.
North Korea’s Less-Known Military Threat: Biological Weapons

North Korea’s Less-Known Military Threat: Biological Weapons

North Korea's leader, Kim Jong-un, center, touring the Pyongyang Bio-Technical Institute, in a photo released in June 2015 by the North Korean news agency.
North Korea’s Less-Known Military Threat: Biological Weapons

North Korea’s Less-Known Military Threat: Biological Weapons

North Korea's leader, Kim Jong-un, center, touring the Pyongyang Bio-Technical Institute, in a photo released in June 2015 by the North Korean news agency.
North Korea’s Less-Known Military Threat: Biological Weapons

North Korea’s Less-Known Military Threat: Biological Weapons

North Korea's leader, Kim Jong-un, center, touring the Pyongyang Bio-Technical Institute, in a photo released in June 2015 by the North Korean news agency.

Evidence of Chlorine Found in Syrian Town of Douma, Investigators Say

The Organization for the Prohibition of Chemical Weapons said it found “reasonable grounds” that chlorine was used in an attack on a Damascus suburb last year.

Evidence of Chlorine Found in Syrian Town of Douma, Investigators Say

The Organization for the Prohibition of Chemical Weapons said it found “reasonable grounds” that chlorine was used in an attack on a Damascus suburb last year.
A Year After Skripal Poisoning, Russia Offers Defiant Face to Britain and the West

A Year After Skripal Poisoning, Russia Offers Defiant Face to Britain and the West

Scaffolding secured by the police around the former home of Sergei V. Skripal, in Salisbury, England, on Monday. British authorities have accused Russia of trying to poison Mr. Skripal.
A Year After Skripal Poisoning, Russia Offers Defiant Face to Britain and the West

A Year After Skripal Poisoning, Russia Offers Defiant Face to Britain and the West

Scaffolding secured by the police around the former home of Sergei V. Skripal, in Salisbury, England, on Monday. British authorities have accused Russia of trying to poison Mr. Skripal.
U.S. Says Assad May Be Using Chemical Weapons in Syria Again

U.S. Says Assad May Be Using Chemical Weapons in Syria Again

Rubble and destroyed buildings in the town of Kafranbel, Syria, in the rebel-held part of Idlib Province.
U.S. Says Assad May Be Using Chemical Weapons in Syria Again

U.S. Says Assad May Be Using Chemical Weapons in Syria Again

The State Department cited an attack in which the military might have used the weapons in an offensive on the Idlib area, the final rebel stronghold.
U.S. Yet to Find Evidence of New Chemical Weapons Attack in Syria

U.S. Yet to Find Evidence of New Chemical Weapons Attack in Syria

Officials appeared to edge away from the urgency of an earlier State Department announcement that warned of new chemical attacks by the Syrian government.

James Ketchum, Who Conducted LSD Experiments on Soldiers, Dies at 87

An Army psychiatrist, he spearheaded a Cold War project to test whether recreational drugs could be used in chemical attacks to disable enemy troops.

James Ketchum, Who Conducted LSD Experiments on Soldiers, Dies at 87

An Army psychiatrist, he spearheaded a Cold War project to test whether recreational drugs could be used in chemical attacks to disable enemy troops.

James Ketchum, Who Conducted LSD Experiments on Soldiers, Dies at 87

An Army psychiatrist, he spearheaded a Cold War project to test whether recreational drugs could be used in chemical attacks to disable enemy troops.

James Ketchum, Who Conducted LSD Experiments on Soldiers, Dies at 87

An Army psychiatrist, he spearheaded a Cold War project to test whether recreational drugs could be used in chemical attacks to disable enemy troops.