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•  The document, prepared by a U.N. committee, is largely symbolic because none of the signatories possesses nuclear weapons. Countries with nuclear arsenals that have not signed it include the United States, Russia, India and Pakistan.
•  Japan does not have nuclear weapons and has pledged not to produce any, al

though some hawkish members of the ruling party say the country should consider a nuclear option.
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•  SOUTH MIAMI, Fla. (AP) -- The post to his Facebook friends was as chilling as the photograph that followed it.
•  "Im going to prison or death sentence for killing my wife love you guys, miss you guys takecare Facebook people you will see me in the news," said the Thursday morning post on Derek Medina's Facebook page.
•  The South Florida man then apparently posted a photo of his 26-year-old wife's body slumped on the floor and turned himself in to police, who late Thursday charged the property management supervisor with first-degree murder.
•  Miami-Dade police said the 31-year-old Medina turned himself in to police after Jennifer Alfonso was fatally shot inside the couple's home in South Miami, a suburb of Miami. When officers responded to the home, they found Alfonso's body, as well as her 10-year-old daughter, who was unharmed.
•  According to the affidavit, the 6-foot-2, 200-pound Medina said the couple became involved in a heated argument in an upstairs bedroom when he armed himself with a gun and pointed it at her. He said Alfonso left the bedroom, returning later to say she was leaving him. He says he went downstairs and confronted her in the kitchen, when she began punching him. He claims he went back upstairs to get his gun and confronted her again, at which time she grabbed a knife. Medina said he was able to disarm her and put the knife in a drawer, but that when she began punching him again, he shot her several times, the affidavit says.
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•  PHILADELPHIA (AP) -- Researchers trying to develop a diagnostic tool for

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