Weapons administration

Russian Foreign Minister Sergey Lavrov listens to his Syrian counterpart Walid Muallem during their meeting in Moscow, Russia, on Thursday, April 13, 2017. Lavrov said he expected the OPCW ( Organization for the Prohibition of Chemical Weapons ) to conduct an extensive probe into the suspected nerve gas attack on Khan Sheikhoun, Syria, which could produce a report within about three weeks, the British delegation to the commission said Thursday. (AP Photo/Pavel Golovkin)

Han Song Ryol, North Korea's vice foreign minister, listens to a translator during an interview with The Associated Press on Friday, April 14, 2017, in Pyongyang, North Korea. Han Song Ryol said the situation on the Korean Peninsula is now in a "vicious cycle." (AP Photo/Wong Maye-E)

FILE - In this April 7, 2017 file photo, President Donald Trump, left, and Chinese President Xi Jinping walk together after their meetings at Mar-a-Lago, in Palm Beach, Fla. China says President Xi has stressed the need for an end to North Korea's nuclear weapons program in a phone discussion with Trump that followed tweets from the U.S. president urging China to play a more active role. Xi told Trump that China insists on peace and stability on the Korean Peninsula and advocates resolving the problem through peaceful means. He said China would maintain "communication and coordination" with Washington over it. The two leaders spoke Tuesday night, April 11, 2017, Washington time. (AP Photo/Alex Brandon, File)

In this photo provided by the U.S. Navy, sailors conduct flight operations on the aircraft carrier USS Carl Vinson (CVN 70) flight deck in April 8, 2017. The Trump administration deployed an aircraft carrier to the region this week in a show of force that also could expose American weakness. If the North proceeds with a ballistic missile or nuclear test and the U.S. does nothing in response, America’s deterrence will appear diminished. The USS Carl Vinson is steaming to waters off the Korean Peninsula as anticipation mounts that Kim Jong Un will stage another weapons test around the anniversary of the nation’s founder on Saturday.(Mass Communication Specialist 3rd Class Matt Brown/U.S. Navy via AP)

In this photo provided by the U.S. Navy, sailors conduct flight operations on the aircraft carrier USS Carl Vinson (CVN 70) flight deck in April 8, 2017. The Trump administration deployed an aircraft carrier to the region this week in a show of force that also could expose American weakness. If the North proceeds with a ballistic missile or nuclear test and the U.S. does nothing in response, America’s deterrence will appear diminished. The USS Carl Vinson is steaming to waters off the Korean Peninsula as anticipation mounts that Kim Jong Un will stage another weapons test around the anniversary of the nation’s founder on Saturday.(Mass Communication Specialist 3rd Class Matt Brown/U.S. Navy via AP)

FILE - In this April 7, 2017 file photo, President Donald Trump, left, and Chinese President Xi Jinping walk together after their meetings at Mar-a-Lago, in Palm Beach, Fla. China says President Xi has stressed the need for an end to North Korea's nuclear weapons program in a phone discussion with Trump that followed tweets from the U.S. president urging China to play a more active role. Xi told Trump that China insists on peace and stability on the Korean Peninsula and advocates resolving the problem through peaceful means. He said China would maintain "communication and coordination" with Washington over it. The two leaders spoke Tuesday night, April 11, 2017, Washington time. (AP Photo/Alex Brandon, File)

Iranian presidential hopeful Ebrahim Raisi speaks at Houri mosque in southern Tehran, Iran, Monday, April 10, 2017. Raisi, a hard-line cleric and close ally of Iran's supreme leader, has announced he will run in the May presidential election. Iranian hardliners had hope Raisi would challenge incumbent President Hassan Rouhani, who is eligible to run for a second term. (AP Photo/Vahid Salemi)

French Mayor of Bayonne Jean-Rene Etchegaray, fourth left, delivers his speech ahead of the announcement by Ram Manikkalingam, third left, president of the Verification Commission for disarmament of ETA, the Basque separatist group, that ETA handed over its arms in Bayonne, southwestern France, Saturday, April 8, 2017. The Basque separatist group ETA, inactive for more than five years, handed over its arms Saturday, putting a finishing touch to a 43-year violent campaign that claimed the lives of over 800 people mostly in Spain. (AP Photo/Alvaro Barrientos)

French Mayor of Bayonne Jean-Rene Etchegaray, fourth left, delivers his speech ahead of the announcement by Ram Manikkalingam, third left, president of the Verification Commission for disarmament of ETA, the Basque separatist group, that ETA handed over its arms in Bayonne, southwestern France, Saturday, April 8, 2017. The Basque separatist group ETA, inactive for more than five years, handed over its arms Saturday, putting a finishing touch to a 43-year violent campaign that claimed the lives of over 800 people mostly in Spain. (AP Photo/Alvaro Barrientos)

FILE - In this April 3, 2017, file photo Russian President Vladimir Putin pauses as he speaks during a news conference at Konstantin palace in St.Petersburg, Russia. After President Donald Trump’s election victory, the United States and Russia appeared headed toward their smoothest ties in decades. Not anymore. (AP Photo/Dmitri Lovetsky, Pool, File)