Three were marched bent double into a Moscow court while the fourth was in a wheelchair. All were charged with committing an act of terrorism. The Islamic State group, or IS, said it carried out Friday’s outrage at Crocus City Hall, and posted video evidence. Russian officials have claimed, without...

Russia on Sunday held a day of mourning after at least 137 people were killed in an attack on a concert venue in Moscow, the country’s worst attack in Russia on Sunday held a day of mourning after at least 137 people were killed in an attack on a concert venue in Moscow, the country’s worst attack...