Russia says will act responsibly despite New START nuclear treaty expiry Both Beijing and Moscow expressed regret at lapse of last Russia-US nuclear arms control treaty.Share this: Russia criticises US as final nuclear warhead treaty set to expireDateFebruary 4, 2026In relation toAl-JazeeraLast US-Russia nuclear treaty is expiring: Does it really matter?DateFebruary 3, 2026In relation toAl-JazeeraRussia says it will stick to limits of expired nuclear treaty if US doesDateFebruary 11, 2026In relation toAl-Jazeera