Military and defense

In this undated photo provided by the National Immigration Law Center shows Juan Manuel Montes, 23. The U.S. Department of Homeland Security reverses itself on the status of Montes, who may be the first person who qualifies for a program to shield young immigrants to be deported by President Donald Trump. Authorities now acknowledge that Montes, qualified for the Deferred Action for Childhood Arrivals program but still defend the decision to return him to Mexico. (Juan Gastelum/National Immigration Law Center via AP)

European Council President Donald Tusk tells reporters the case in which he was questioned for over eight hours as a witness in Warsaw, Poland, is of highly political character, Wednesday, April 19, 2017. The investigation deals with alleged secret illegal contacts between Polish and Russian intelligence officials at a time when Tusk was Poland's prime minister from 2007-2014. (AP Photo/Czarek Sokolowski)

U.S. Vice President Mike Pence, left, and Japanese Deputy Prime Minister and Finance Minister Taro Aso shake hands as they end the joint press conference at the prime minister's office in Tokyo, Tuesday, April 18, 2017. After meeting with Japanese Prime Minister Shinzo Abe, Pence held talks with Aso on a new U.S.-Japan "economic dialogue" to be led by the two. The new forum for trade talks was launched by U.S. President Donald Trump and Abe during the Japanese leader's visit to the U.S. in February. (AP Photo/Eugene Hoshiko)

U.S. Vice President Mike Pence looks at the North side from Observation Post Ouellette in the Demilitarized Zone (DMZ), near the border village of Panmunjom, which has separated the two Koreas since the Korean War, South Korea, Monday, April 17, 2017. Viewing his adversaries in the distance, Pence traveled to the tense zone dividing North and South Korea and warned Pyongyang that after years of testing the U.S. and South Korea with its nuclear ambitions, "the era of strategic patience is over." (AP Photo/Lee Jin-man)

FILE - In this Oct. 21, 2016 file photo, a CVS drugstore and pharmacy in Philadelphia. Three years after a wait-time scandal, the Veterans Affairs Department is hoping a private-sector partnership with the CVS Pharmacy chain will reduce some of its strain in providing timely urgent care. The new initiative announced Tuesday, April 18, 2017, is a pilot program that allows ailing veterans who receive treatment at the Phoenix VA medical center to access one of 24 "MinuteClinics" operated by CVS for treatment of minor illnesses and injuries, such as respiratory infections or to order lab tests. (AP Photo/Matt Rourke, File)

FILE - In this Oct. 21, 2016 file photo, a CVS drugstore and pharmacy in Philadelphia. Three years after a wait-time scandal, the Veterans Affairs Department is hoping a private-sector partnership with the CVS Pharmacy chain will reduce some of its strain in providing timely urgent care. The new initiative announced Tuesday, April 18, 2017, is a pilot program that allows ailing veterans who receive treatment at the Phoenix VA medical center to access one of 24 "MinuteClinics" operated by CVS for treatment of minor illnesses and injuries, such as respiratory infections or to order lab tests. (AP Photo/Matt Rourke, File)

French presidential candidate Emmanuel Macron, center, poses for selfie with employees as he visits the meat paviIion at the Rungis wholesale food market, south of Paris, Tuesday April 18, 2017. Macron, an independent centrist with pro-business, pro-European views, is among the front-runners in France's unpredictable presidential race. The top two vote-getters in the first round Sunday will advance to the May 7 presidential runoff. (Philippe Wojazer; Pool via AP)

FILE - In this April 11, 2017 file photo, Defense Secretary Jim Mattis pauses during a news conference at the Pentagon. Mattis is looking to the Middle East and North Africa for broader contributions and new ideas to fight Islamic extremism as the Trump administration fleshes out its counterterrorism strategy. His trip to the region this week includes stops with longstanding allies Israel and Saudi Arabia, and new partners like Djibouti. (AP Photo/Carolyn Kaster, File)

U.S. Vice President Mike Pence looks at the North side from Observation Post Ouellette in the Demilitarized Zone (DMZ), near the border village of Panmunjom, which has separated the two Koreas since the Korean War, South Korea, Monday, April 17, 2017. Viewing his adversaries in the distance, Pence traveled to the tense zone dividing North and South Korea and warned Pyongyang that after years of testing the U.S. and South Korea with its nuclear ambitions, "the era of strategic patience is over." (AP Photo/Lee Jin-man)