In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.

Q: Police block off the area around the U.S. Embassy in Montenegro's capital Podgorica, Thursday, Feb. 22, 2018. Montenegro says an attacker threw a grenade at the U.S. Embassy in the capital of the Balkan... (Associated Press) 
  
 Police block off the area around the U.S. Embassy in Montenegro's capital Podgorica, Thursday, Feb. 22, 2018. Montenegro says an attacker threw a grenade at the U.S. Embassy in the capital of the Balkan state then killed himself with another explosive device. (AP Photo/Risto Bozovic) (Associated Press) 
  
 PODGORICA, Montenegro (AP) — An attacker threw a hand grenade at the U.S. Embassy in Montenegro's capital and then killed himself with another explosive device, the government here said Thursday. 
  
 No one else apparently was hurt and there was no major damage. Police sealed off the area after the blasts around midnight (2300 GMT Wednesday). 
  
 The U.S. State Department said embassy officials were working with police to identify the assailant and was working internally to confirm all staff are safe. 
  
 Montenegro borders the Adriatic Sea in southeastern Europe and its capital is Podgorica. It joined NATO last year despite strong opposition from its traditional Slavic ally Russia. 
  
 Several people, including two Russian secret service operatives, are on trial in Podgorica on charges that they wanted to overthrow Montenegro's government in 2016 because of its pro-Western policies. 
  
 The U.S. established diplomatic ties with the tiny Balkan state in 2006 after it split from much larger Serbia. 
  
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 Associated Press writers Dusan Stojanovic in Belgrade, Serbia, and Josh Lederman in Washington contributed to this report. ||||| Hand Grenade Thrown At U.S. Embassy In Montenegro; Attacker Killed 
  
 Enlarge this image toggle caption Risto Bozovic/AP Risto Bozovic/AP 
  
 Updated at 7:20 a.m. ET 
  
 In the Balkan state of Montenegro, an unidentified man threw a hand grenade at the U.S. Embassy in the capital before then killing himself with another explosive, according to The Associated Press. 
  
 The building in Podgorica was not damaged and no one else was injured, according to a State Department spokesman. 
  
 The motive for the attack is not known, and it is also not known whether it was meant to be a suicide attack. 
  
 Officials at the embassy advised U.S. citizens to avoid the area until further notice. 
  
 The attack happened around midnight local time while the offices were closed for the night. 
  
 Police in Montenegro issued a statement on Thursday saying they are "working intensely" to identify the assailant. The blast created a crater on embassy property but caused no major damage. 
  
 Local employees have been asked to stay home as a precaution while a security review is conducted. 
  
 Montenegro is located in southeastern Europe and was once part of Yugoslavia. 
  
 The U.S. established diplomatic ties with the tiny nation in 2006 after it split from much larger Serbia. 
  
 In August, Vice President Pence visited Montenegro as part of a Balkan state visit. At that time, Montenegro had recently joined NATO. 
  
 NATO's eastward expansion, from its onetime Cold War boundaries into the nations that once were part of the Soviet Union, is a huge frustration for Russia. ||||| ZAGREB, Croatia — A man threw an explosive device onto the grounds of the United States Embassy in Montenegro, doing only minor damage, and then killed himself with another explosive, the Montenegrin police said on Thursday. 
  
 Officers have not determined a motive for the attack in Podgorica, the capital, but they have identified the bomber through DNA testing, said Enis Bakovic, deputy director of the national police. Speaking at a news conference, Mr. Bakovic referred to the man by his initials, D. J., in keeping with the practice of withholding a suspect’s name while an investigation is underway. 
  
 He said that the assailant was a citizen of Montenegro who was born in 1976 in the town of Kraljevo, in neighboring Serbia, and that he had no criminal record. 
  
 The Associated Press and news outlets in Serbia identified the man as Dalibor Jaukovic, a former soldier in the army of Yugoslavia. |||||

A: The offices at the US Embassy in Montenegro were closed for the night late Wednesday when the attack occurred: An unidentified man threw a grenade over the compound's wall and then took his own life using a second explosive device, reports the AP. He was the only casualty, and NPR reports no motive has been disclosed, nor is it clear if the intention was to carry out a suicide attack. A State Department rep says the building, located in the capital city of Podgorica, was not affected, with Radio Free Europe reporting the damage was limited to a crater caused by the explosive. Americans have been warned to steer clear of the embassy until further notice. The New York Times calls Montenegro "one of the world's youngest nations": It was once part of Yugoslavia and declared its independence from Serbia in 2006.
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Q: The Rolling Stones will perform a groundbreaking concert in Havana, Cuba on Friday March 25, 2016. The free concert will take place at the Ciudad Deportiva de la Habana and will be the first open air concert in the country by a British Rock Band. Always exploring new horizons and true pioneers of rock, the Stones, who have toured every corner of the globe, will bring their high octane performance and incredible music catalogue to the Caribbean for the first time ever. 
  
 This once-in-a-lifetime concert event follows the band’s America Latina Ole tour, which is currently receiving rave reviews, playing to huge audiences in stadiums in Santiago, Buenos Aires, Montevideo, Rio De Janeiro, São Paulo and Porto Alegre with Lima, Bogotá and Mexico City following next week. The band are also leading a musician to musician initiative in which much needed musical instruments and equipment are being donated by major suppliers for the benefit of Cuban musicians of all genres. Donors include The Gibson Foundation, Vic Firth, RS Berkeley, Pearl, Zildjian, Gretsch, Latin Percussion, Roland and BOSS with additional assistance from the Latin GRAMMY Cultural Foundation. 
  
 The Rolling Stones said: “We have performed in many special places during our long career but this show in Havana is going to be a landmark event for us, and, we hope, for all our friends in Cuba too.” 
  
 This historical concert will no doubt have Mick Jagger, Keith Richards, Charlie Watts and Ronnie Wood mesmerizing a new audience of fans with a set packed full of classic Stones hits as well as special gems from their million selling albums. 
  
 The Rolling Stones concert, which has been in the planning stages for several months comes only days after President Barack Obama’s recently announced visit to Cuba. 
  
 This entire event is being made possible by the benefaction of Fundashon Bon Intenshon on behalf of the island of Curaçao. Fundashon Bon Intenshon initiates and supports international charitable projects in the fields of education, athletics, cultural literacy, healthcare and tourism as well as other attempts to mitigate the impact of general poverty. 
  
 It is being promoted by AEG’s Concerts West and Musica Punto Zero who extend their gratitude for the support provided by the Institute of Cuban Music in bringing this event to the people of Cuba. 
  
 The Rolling Stones “Concert for Amity” will be filmed and produced by award winning production company JA Digital with Paul Dugdale directing and Simon Fisher and Sam Bridger as producers. Julie Jakobek of JA Digital said: “It’s a great honour to be working with the Rolling Stones again on this hugely exciting and historic event”. ||||| The Rolling Stones Rolling Stones confirm they will play Cuba at Easter ‘Historic’ concert will open door for other bands to perform in the country, according to communist party newspaper Granma The Rolling Stones perform in Sao Paulo, Brazil, in February. Photograph: Paulo Whitaker/Reuters 
  
 The Rolling Stones are set to play Cuba this Easter, the band have confirmed. 
  
 The Stones will perform in Havana at Ciudad Deportiva, a sports complex built in 1957. The news was announced in the country’s official newspaper Granma, which said the concert would be “a historic moment that will open the doors for other great bands to arrive in Havana”. It will be the first open air concert in the country by a British rock band. 
  
  
  
 In a statement, the group said: “We have performed in many special places during our long career but this show in Havana is going to be a landmark event for us, and, we hope, for all our friends in Cuba too.” 
  
 Rumours that the band might play have been growing ever since Mick Jagger visited the city in October 2015. He was believed to be scouting out venues, as well as treating himself to a tour of the local nightclubs. 
  
  
  
 The Stones are currently touring Latin America on their Olé tour, which is currently due to end in Mexico City on 17 March. The Cuba dates will now follow that. |||||

A: Cuba could soon become a concert destination. The Rolling Stones will play a free show there on Friday, March 25 (Easter weekend), the band announced. The performance at Havana's Ciudad Deportiva de la Habana sports complex will be the country's first open-air concert by a British rock band—and the Guardian reports that Cuba's official newspaper, Granma, called the show "historic" and said it would "open the doors for other great bands to arrive in Havana." The news comes on the heels of President Obama announcing he'll visit Cuba this month.
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Q: Nissan is recalling about 1 million late model cars — including its popular Altima and Sentra sedans — because a software glitch can prevent the front passenger air bag from deploying in an accident. 
  
 The recall includes the Nissan Altima, Leaf, Pathfinder, and Sentra from 2013 and 2014 model years. Also recalled are the 2013 Nissan NV200 and Infiniti JX35 and 2014 Infiniti Q50 and QX60 vehicles. 
  
 The automaker said a sensor in the recalled vehicles doesn’t always detect when the front passenger seat is occupied and in some instances doesn't activate the air bag. 
  
 Nissan knows of a handful of accidents where this has occurred. It said there have been no fatalities but that it doesn't know if the problem is linked to any injuries. 
  
 The problem started to crop up about a year ago, according to documents filed with the National Highway Traffic Safety Administration. NHTSA informed Nissan of several complaints, and the automaker looked into the issue. 
  
 During its investigation Nissan looked at a crash where the car’s air bag status light was off and the vehicle’s electronic data record showed that sensors believed the seat was empty. But reports from the scene said there was a passenger in the seat at the time of the accident. 
  
 Over the next year Nissan found several more crashes where car sensors incorrectly judged that the front seat was not occupied. 
  
 Nissan traced the problem to software in the vehicles, which it will now fix for owners. 
  
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 Follow me on Twitter (@LATimesJerry), Facebook and Google+. ||||| 2013 Nissan Sentra. (Photo: Nissan via Wieck) 
  
 Nissan is recalling 1 million vehicles because the air bag system software might not be able to tell whether there is a person sitting in the front passenger seat, so the air bag might not inflate in a crash. 
  
 It's the second passenger air bag recall for some of the vehicles. Last April, 82,038 2013-model vehicles from the same group were recalled because a sensor was improperly manufactured and might prevent the passenger bag from working in a crash. 
  
 Nissan noted in documents on file with the National Highway Traffic Safety Administration that there have been accidents, but no injuries or deaths were specified. 
  
 The recent action involves what's called the occupant classification system, which judges whether anyone is sitting in the passenger's seat in order to decide whether to inflate the bag if there is a crash. 
  
 Nissan documents say the system might not work if there is "high engine vibration at idle when the seat is initially empty and then becomes occupied, or unusual occupant seating postures immediately upon being seated." 
  
 Dealers will reprogram the system at no charge. 
  
 The latest action involves 989,701 Nissan and Infiniti brand vehicles, including some of the automaker's best sellers: 
  
 2013-2014 Nissan Altima (544,139) 
  
 2013-2014 Leaf electric (29,165) 
  
 2013-2014 Nissan Pathfinder (124,202) 
  
 2013-2014 Nissan Sentra (182,569) 
  
 2013 NV200/Taxi (6,696) 
  
 2013 Infiniti JX35/ 2014 QX60 (63,698) 
  
 2014 Infiniti Q50 (unspecified) 
  
 Nissan provided a detailed chronology indicating that it has been investigating reports of the problem since last spring, conducted a recall for a different problem then, but continued to see warranty claims. It began investigating anew last August, is aware of two incidents and has determined the latest issue as software requiring a recall. 
  
 Read or Share this story: http://usat.ly/1fiFGyX |||||

A:
Nissan is calling back about a million of its 2013 and 2014 vehicles: Thanks to a software issue, the passenger airbag may not expand during an accident. The problem is related to the car not recognizing that there is a passenger in the seat, the Los Angeles Times explains. Affected models are the Altima, Sentra, Leaf, Pathfinder, and NV200, as well as the Infiniti JX35, Q50, and QX60. The company is aware of accidents but no fatalities tied to the issue. Some of the same batch of vehicles were recalled last year, also due to passenger air bag problems, USA Today notes. The news comes as GM and Toyota are embroiled in safety concerns of their own.
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