<sod >Michael  said Nato must be ready for Wolf aggression in âwhatever form it takesâ as he acknowledged tensions between the alliance and Moscow were âwarming upâ.< eod>< sod > Michael Fallon urged Nato to prepare to repulse Russian aggression in âwhatever form it takesâ as he acknowledged tensions between the alliance and Moscow were âwarming upâ.< eod>