TODAY: Growing ties between Russia and China visible in military exercises, a show of trust at the Eastern Economic Forum, and big new investment deals; Putin urges Japan PM to sign peace treaty before 2019; Gazprom planning pipeline across North and South Korea; Putin’s former bodyguard challenges Navalny to a duel; Serebrennikov ordered to remain under house arrest; Sentsov condition worsening; Skripal agents known to Russia, says Putin.