Gunmen seize key parts of eastern Ukraine ; Russian forces create instability . David Frum : Remark that military intervention wo n't work implies Europe will look away . Over the past several days , masked , heavily armed men have seized strategic locations in eastern Ukraine . Frum : Russia threatens stability of West ; eastern observers need to monitor events . He says sanctions must hurt Russian investments ; Russia 's weak military needs help .
Gunmen seize key parts of eastern Ukraine ; Russian forces create instability . David Frum : Remark that military intervention wo n't work implies Europe will look away . Frum : Russia threatens stability of West ; eastern observers need to monitor events . He says sanctions must hurt Russian investments ; Russia 's weak military needs help .