moscow president vladimir putin personally oversee launch four nuclear-capable ballistic missiles part train exercise russia strategic nuclear force kremlin say friday interfax news agency report test launch conduct thursday involve land air submarine-based ballistic missiles russia defense ministry say separate statement ministry say topol intercontinental ballistic missile test fire plesetsk cosmodrome northern russia hit target kura military test range kamchatka peninsula thousands kilometers miles away putin part test oversee launch four nuclear-capable missiles ifax