As international powers press Moscow to quickly investigate alleged poisoning of top Putin rival, Russia rejects 'unfounded attacks'

German hospital treating Alexei Navalny says he is 'responding to verbal stimuli,' but it's too early to gauge 'potential long-term effects of his severe poisoning'

Spokesman pushes back against claim Moscow was responsible for attack on Putin critic; Merkel refuses to rule out consequences for Baltic Sea pipeline as part of possible sanctions

Calls mount for international action after Germany confirms traces of nerve agent Novichok in hospitalized Putin critic

Merkel's spokesman says testing shows same chemical used to poison former Russia spy Sergei Skripal and his daughter was detected in Alexei Navalny

Countries to vote Wednesday on annual budget of international watchdog, with Moscow threatening to cut funding if it includes money for team probing Assad attacks