World leaders are holding Russia’s increasingly authoritarian leader, President Vladimir Putin, responsible for the death of leading Russian opposition figure Alexei Navalny. Navalny died in prison, the state news agency TASS reported on Friday, citing the prison authorities. The 47-year-old collapsed on Friday after a walk in his penal colony in the northern Russian region of Yamal and immediately lost consciousness, the report said, adding that resuscitation attempts by paramedics were unsuccessful. Kremlin spokesman Dmitry Peskov said Putin had been informed of his death, but did not provid…